Last updated at: Monday, March 30, 2009


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Metal Gear Solid 4: Guns of the Patriots

100K Drebin Bonus

When entering the password into Otacon's terminal, input 14983. Although incorrect, Snake will (invisibly) gain 100K of Drebin points. Run through the game a few more times with this and the no kills and no alerts bonuses, and you should amass quite a sum of Drebin points.

Alternate ending

If you fight Mantis with a Sixaxis controller, the ending is different than if you were using a DualShock 3 controller.

Audio flashbacks

Experience the following audio flashbacks to get 1,000 Drebin Points for some of them:

Find the crop circle near the river while tracking Naomi in Act 2 after the Laughing Octopus fight (flashback of the Colonel acting strangely in Metal Gear Solid 2).

Find the Hind (flashback of the end of the Hind confrontation).

The middle of the helipad (flashback of Hind D speech).

The small shack to the West of the area (flashback of "A surveillance camera?!").

Enter through either of the vents instead of the door (flashback Master Miller's introduction).

Stand near the tank hangar's door (flashback of Meryl's "Where I can see you" speech).

Stand in the decontamination room before the hallway to Otacon's office (flashback of Cyborg Ninja fighting Genome Soldiers).

Inside Otacon's lab (flashback of Grey Fox's introduction).

Stand in the filled-in trench leading up to the Comm Towers (flashback of Meryl telling Snake to continue without her).

Climb as far as you can up the Comm Tower nearest where you enter and walk around (flashback of beginning of the Hind confrontation).

In front of the other Comm Tower, facing the exit (flashback of Otacon's "What are you fighting for?" speech).

Stand near the door leading back to the room where you fought Vulcan Raven (flashback of Raven's final speech).

In Shadow Moses, near the elevator (flashback of Infiltration speech).

Return to the crashed Hind chopper after the Crying Wolf fight (flashback of Liquid Snake being shot down).

Aim the Mk.23 SOCOM while at Shadow Moses (Snake will say "Just like old times").

Move the camera view directly overhead and move around (Snake will say "Just like old times").

Big Boss Extreme difficulty

Complete the single-player mode once (and saving the cleared data).

Boktai: The Sun Is In Your Hands

There is a gun called the "Stun Gun" which is actually a reference to one of Hideo Kojima's older games, Boktai: The Sun Is In Your Hands for the Gameboy Advance. This is confirmed when Solid Snake raises the gun towards the sun to recharge and yells out "Sunlight", much as the main character did in Boktai.

Bonus ammo

Successfully complete the game to unlock the following ammo for purchase from Drebin:

Emotive Cry - causes soldiers 'Cry' emotion to activate
Emotive Laughter - causes soldiers 'Laughter' emotion to activate
Emotive Rage - causes soldiers 'Rage' emotion to activate
Emotive Scream - causes soldiers 'Scream' emotion to activate
Smoke Grenade Blue
Smoke Grenade Green
Smoke Grenade Red
Smoke Grenade Yellow

Bypassing gecko's easily

Shoot five tranquilizer rounds into the legs of a Gekko. It will collapse and thrash around on the floor. You can walk past without being spotted while that is happening.

its similar with chaff grenades, although they dont last as long.

Cheaper drebin prices

Set the PS3 system date to a Wednesday or Sunday, and Drebin will have cheaper prices. Additionally, all of Drebin's prices are cut by 50% during Act 5.

Complete weapons list

The following weapons are available in the game:

Pistols

1911 Custom
Desert Eagle (originally used by Meryl)
Desert Eagle Long Barrel
Five Seven (gun used by Snake when he infiltrated Galuade)
Glock 18C
GSR (.45)
Mk 2 Pistol (Tanq)
Mk.23 SOCOM (Snake's main handgun from Metal Gear Solid)
Operator (Colt .45 with extended barrel)
PMM
PSS
Race Gun (fires ricochet bullets)
Solar Gun (causes enemies to drop weapons and does extreme damage to Vamp)
Thor .45-70 (rifle pistol)
Type 17 (broom handle machine pistol)

Sub-machine guns

Bizon
M-10
MP5sd2
Mp7
P90
Patriot (The Boss' weapon; has unlimited ammunition)
VZ. 83 Skorpion

Assault rifles

Ak102
An94
FAL Carbine
G3A3
M4 Custom
Mk.17
XM8

Sniper weapons

DSR-1
Heavy machine guns
HK21E
M14EBR
M60E4
M82A2
MK.46 Mod 1
Mosin-Nagant (The End's sniper rifle)
PKM
RAIL GUN
SVD
Tanegashima (old flint lock that is very slow to reload, 33% of hits causes a whirlwind that carries off enemies making them drop items)
VSS

Shotguns

M870 Custom
Saiga-12
Twin Barrel

Grenade launchers

MGL-140
XM25

Rocket launchers

Fim-92A (Stinger)
Javelin
M72A3
RPG-7

Weapon modifiers

Dot sights
Flashlights
Fore grips
Grenade launchers
Laser sights
Masterkey (under barrel shotgun for assault rifles)
Scopes
Suppressors

Others

C4
Chaff grenade
Claymore
Grenade
Knife
Molotov cocktail
Sleeping gas mine
Sleep gas satchel charge
Smoke grenades (yellow, red, blue, green)
Stun grenade
White phosphorus grenade

Control intermission sequences

During an intermission sequence, press D-pad Up to zoom the camera in then use the Right Analog-stick to pan the camera around. The harder you press Up, the more zoomed in the camera view. Also, some intermission sequences have prompts to see it through Snake's eyes by holding L1 (look for the icon at the top left of the screen); or view flashback images by repeatedly tapping X when a prompt appears (look for the icon at the top right of the screen). You can also pause an intermission sequence by pressing Start.

Costumes

Complete the indicate task to unlock the corresponding costume.

CostumeHow to Unlock:
AltairObtain the Assassin emblem
Civilian DisguiseStart Eastern Europe level
Middle East Militia DisguiseMiddle East in the Militia Safe House
South American Rebel DisguiseSouth America (Cove Valley Village)
SuitClear the game once.

Easy bandanna or stealth

To unlock the Bandana and Stealth Suit easier, wait until Act 5 (Drebin's prices are 50% off) to get the items for 2.5 million Drebin Points each instead of the 5 million Drebin Points they normally each cost.

--NOTE--
this is only if you are playing the game again using the same save, it will not work during the first playthrough as they are not available, plus you will have more drebin points.

Easy Way To beat Laughing Octopus(non lethal)

When The Fight starts youll start Rite in front of he so quick pause the game and equipt the sleeping dart gun,stun grenades,& smoke grenades. When you start throw a stun at her follow her into the hallway and every time she stops to shoot at you trow more stuns at her,when the black smoke comes up run away,then use the ENV. solid eye to find her,When You Find her
use ur seepin dart pistol shoot her in the head,then she deploys the black smoke and then you run again she will come threw 1 of the windows then use ur stuns againand keep dodging and running from her attacks when she starts to roll get up on a desk or bed then stun her.Hope This Helps.

EDancing sunny

Play the "Oishii ChuhanSeikatsu" Japanese pop song on Snake's iPod. During that song, press Start to see Sunny dancing at the bottom left corner.

Emblems

Successfully complete a single player game with the listed requirements to unlock the corresponding emblem. Note: You can get more than one in one playthrough, play through a few times to get more emblems, and because its such an awesome game (well done konami/hideo kojima)

EmblemHow to unlock
AntShake 50 enemies for items.
AssassinKill more than 50 enemies with knife, have over 50 CQC holds, and get discovered less than 25 times.
BearChoke 100 enemies to death.
BeeUse the Scanning Plug S or Syringe on 50 enemies.
Big BossSelect the Boss Extreme difficulty, use no continues, get no alerts, kill no enemies (including Bosses), do not use the stealth suit or bandanna special items (can possess, but not activate), and have a completion time less than 5 hours.
Blue BirdGive friendly soldiers 50 items.
CentipedeGet less than 75 alert phases, less than 250 kills, and over 25 continues.
ChickenGet over 150 alert phases, over 500 kills, over 50 continues, use over 50 recovery items and complete the game in over 35 hours.
CowActivate over 100 alerts.
CrocodileHave over 400 kills.
EagleGet 150 headshots.
FoxSelect the Naked Normal or higher difficulty setting, instigate no more than five alerts, kill no enemies (including Bosses), do not continue, do not use any life recovery items, do not use the stealth suit or bandanna special items (can possess, but not activate), and have a completion time less than 6 hours.
Fox HoundSelect the Big Boss Hard or higher difficulty setting, instigate no more than three alerts, kill no enemies (including Bosses), do not continue, do not use any life recovery items, do not use the stealth suit or bandanna special items (can possess, but not activate), and have a completion time less than 5 hours and 30 minutes.
FrogDive or roll 200 times.
GeckoPress against walls for a total of 1 hour.
Giant PandaComplete the game after 30 cumulative hours.
GibbonHold up 50 enemies.
HawkGet admired by 25 friendly soldiers.
HogGet 10 combat highs.
HoundSelect the Naked Normal or higher difficulty setting, instigate no more than three alerts, kill no enemies (including Bosses), do not continue, do not use any life recovery items, do not use the stealth suit or bandanna special items (can possess, but not activate), and have a completion time less than 6 hours and 30 minutes.
HyenaPick up 400 dropped weapons.
Inch WormCrawl on the ground for a total of 1 hour.
JaguarGet over 76 alert phases, less than 250 kills, and less than 26 continues.
LeopardGet over 76 alert phases, less than 250 kills, and at least 26 continues.
Little GrayCollect all 69 weapons.
LobsterSpend a total of 2.5 hours crouching.
MantisUse no continues, get no alerts, and have a completion time less than 5 hours.
OctopusGet no alert phases.
PantherGet over 76 alert phases, over 251 kills, and less than 26 continues.
PigConsume over 40 food items.
PigeonHave no kills.
PumaGet over 76 alert phases, over 251 kills, and at least 26 continues.
RabbitLook at 100 Playboy pages.
RavenComplete the game in less than five hours.
ScarabExecute 100 dive rolls.
ScorpionHave less than 75 alert phases, less than 251 kills, and less than 26 continues.
SpiderHave less than 75 alert phases, at least 251 kills, and at least 26 continues.
TarantulaHave less than 75 alert phases, at least 251 kills, and less than 26 continues.
TortoiseHide inside a cardboard box or drum barrel for at least one hour.
WolfHave no continues and use no recover items.

Extras Screen Passwords

These passwords are entered at the Extras screen under Password after beating the game once on any difficulty.

PasswordEffect
thomasUnlocks "Desperate Chase" iPod Song
georgeUnlocks "Gekko" iPod Song
theodoreUnlocks "Midnight Shadow" iPod Song
abrahamUnlocks "Mobs Alive" iPod Song

Face paint

Different face paint unlocked for in game use.

UnlockableHow to unlock
Big Boss'sEarn the Big Boss emblem on a single-player session
Crying WolfDefeat the Battle Beauty (human form) Crying Wolf by non-lethal means.
DrebinPurchase and keep more than 60 different weapons.
FaceCamoDefeat the Battle Beauty Laughing Octopus (the overall battle, no specifics involved).
Laughing OctopusDefeat the Battle Beauty (human form) Laughing Octopus by non-lethal means.
OtaconShock Dr. Emmerich using the Metal Gear II during the intermission scene.
Raging RavenDefeat the Battle Beauty (human form) Raging Raven by non-lethal means.
Raiden Mask AShock Sunny using the Metal Gear II during the intermission scene.
Raiden Mask BShock Dr. Naomi Hunter using the Metal Gear II during the intermission scene.
Roy CampbellShock Colonel Campbell using the Metal Gear II during the intermission scene.
Screaming MantisDefeat the Battle Beauty (human form) Screaming Mantis by non-lethal means.

Frog soldiers (haven troopers) reaction to body searches

Hold up a FROG soldier, and body search her. When you would normally ball crush a male prisoner, they will say "You men are all the same", "You're disgusting!", or "Ugh" and kick you.

When you search a FROG soldier when she has no items, she will giggle as if ticklish.

When you search a FROG soldier and touch her chest, sometime she will moan or say "You're pretty good at this".

Glowing eyes

Use the Solid Eye with the Raiden A mask to make both of Snake's eyes glow red.

Hideo Kojima

After defeating Screaming Mantis and immediately after Psycho Mantis vibrates your controller, keep pressing X to see Hideo Kojima.

If you prolong the Psycho Mantis fight long enough, the game will show the opening screen, except the word "Kojima" will replace "Konami". The game will then resume the Psycho Mantis fight.

Press L1 to examine the .50 Cal Anti-Material Sniper Rifle to see "Recommended by Hideo Kojima."

When Snake hides from the two Irvings next to the box of watermelons, the box reads "No Place For Hideo."

You can see a ghost image of Hideo Kojima in Otacon's lab using the camera. It is between Policenauts and the poster that from a distance reads "Final Fantasy VI".

Ignored by PMC troops

PMC soldiers will ignore you when wearing Otacon's or one of the Beauty's face paints if you are not attacking or displaying a weapon. This allows you to track the Resistance easier.

Infinate drebin points (DP)

First, acquire the drum can (you dont need to use it, its the location that you need). You do this by finding the soldier (johnny/akiba) that is hiding in the drum, and using it as a bathroom. After that, go up ahead a few feet, where you will see three crates. When you have gone past them, you will see just two crates, **(STAY BEHIND THEM, DO NOT GO PAST THEM)**. You will also see about three rebel soldiers fighting. One is carrying an RPG and the other two have machine guns. They will die and respawn continuously. You will have a chance to pick up the RPG after the soldier has died three times. Do so because each RPG is worth 6,000 Drebin Points. The important thing is to stay anywhere behind the two crates, otherwise the trick will not work. Going further than the two crates will stop the respawning loop of the soldiers dying. The only way to get the RPG without breaking the respawning loop is to use the Mk II. Also the machine guns are worth a few thousand DP, including the PMC/goverment troops guns, not just the rebels.

Inheritence

You carry over your Drebin points, weapons, ammunition, items, and special items from a previous game upon game clear. However, Snake will need to encounter Metal Gear II in the first stage to get his stuff back.

Be sure to save your cleared data upon game completion to track your items. Load the cleared data to reap your benefits.

iPod Tunes

Snake's iPod can download specific tunes throughout the course of the game. Some songs have an additional "secret" effect when it is played in the game.

TuneHow to unlock
Beyond the Bounds (increases stun damage done by Snake from non-lethal weapons)Stage 4 Shadow Moses, Tank Hangar. After power is restored, backtrack to the upper catwalk and explore all rooms
Big Boss (increase stun damage and increases Snake's accuracy when played)Earn the Big Boss emblem
Bio-hazard (cause soldiers held by Snake to scream in terror)Stage 3 Europe, Midtown
Destiny's Call (cause soldiers held by Snake to go enraged)A random gift from a militia or rebel soldier if Snake gives them a healing item
Flowing Destiny (cause soldiers held by Snake to weep like a little girl)Stage 4 Shadow Moses, Canyon. Before leaving the canyon area, examine the rocky walls for a hole hiding this item
Fury, The (cause soldiers held by Snake to go enraged)Stage 2 South America, Cove Valley Village. Inside the fire ravaged house
MGS 4 Love Theme / Action (cause soldiers held by Snake to weep like a little girl)A random gift from a militia or rebel soldier if Snake gives them a healing item
Opening - Old L.A. 2040 (increase Snake's accuracy)Stage 4 Shadow Moses, Nuclear Warhead Storage B2. Input 78925 into Otacon's lab computer
Policenaughts Ending (cause soldiers held by Snake to fall asleep on touch)Stage 4 Shadow Moses, Nuclear Warhead Storage B2. Input 13462 into Otacon's lab computer
Rock Me (increases Snake's amount of life recovered from items and other means)Stage 2 South America, Confinement Facility. Island in the south-eastern quadrant
Sailor (increases Snake's amount of life recovered from items and other means)Stage 2 South America, Vista Mansion. Between the east wall and a cargo container
Show Time (cause soldiers held by Snake to scream in terror)A random gift from a militia or rebel soldier if Snake gives them a healing item
Snake Eater (increase the life recovery rate of Snake through items and other actions)Unlocked by earning all 40 game clear emblems
Subsistence (increase Snake's accuracy)Play at least one game of Metal Gear Online. You must start the match with at least two players

Laughing Beauty Mask

Defeat Laughing Octopus, then when she is in Human form use the Mk. 2 Pistol to put her to sleep.

Lost references

When the game first begins, the channels on the television are numbered 15, 16, 23, and 42, which are part of the number sequence from the television show Lost.

Lunar knights reference

The monitor for the PC used by Sunny has a Lunar Knights screensaver.

Metal Gear Solid series references

Look at the two puppets dangling from Screaming Mantis. The two puppets appear to be Psycho Mantis and The Sorrow from previous Metal Gear Solid games.

When Snake and Naomi talk about war changing and how it used to be "just a game", all of the Metal Gear Solid titles appear in an indexed list. After MGS4, there are a few boxes titled "In Production."

When you first enter Big Mama's hideout and the guards start talking about Snake, press L1 to see posters from Metal Gear Solid, Metal Gear Solid 2, Metal Gear Solid 3, and Metal Gear Solid: Portable Ops.

In the Nomad briefing missions, take control of the Mk II, and go to the right of the helicopter. There are three separately caged chickens, each with its own label: "Solid", "Liquid", and "Solidus". This is a reference to the three Big Boss clones. A further reference to those chickens happens at the very beginning of Act 1 when Sunny is cooking eggs. She says "Only two eggs? Solidus must've taken the day off."

The rubber duck in the upper gantry of the Nomad can also be found in Capture The Flag mode in Metal Gear Online; in the GA-KO camouflage in Metal Gear Solid 3; and floating in the flooded Shell Core in Metal Gear Solid 2.

When you are in the final showdown with Liquid, when it enters the third stage of the fight, Liquid will do Ocelot's signature hand gesture.

Otacon has a model of Rex beside his computer.

Metal Gear Solid VR Missions reference

During a Codec transmission with Campbell, he will talk about the training PMC soldier's went through. Snake says similar to "...better than those VR missions".

Metal Gear Solid: The Twin Snakes references

If you stare at Meryl's breasts, she will blush similarly to how she did in Metal Gear Solid: The Twin Snakes.

MGS1 references

During the Act 1 FROG attack sequence, attack Meryl. She will say the same things she said when you attacked her in Metal Gear Solid.

The password Johnny puts in to disable the laser trip trap is "MERYL SILVERBURGH".

You fight Crying Wolf in the same area you fought Sniper Wolf.

You can find the Hind D still in the Snowfield where you fight Crying Wolf.

During the Mantis fight, switch your controller ports when your television switches to "Hideo 2". Otacon will come on the Codec and notify you that the trick does not work twice. You will also get a suggestion about destroying the bust.

When you die in Act 4, the "Game Over" music from the first Metal Gear Solid will play.

After you die during the final Boss battle and select "Exit", it quickly changes to "Exist". Liquid Ocelot says "Not yet Snake, it's not over yet" and it moves the pointer back to "Continue". This is a reference to a quote by Liquid in the original Metal Gear Solid.

MGS2 reference

Call Rosemary with a ration equipped to see a reference to a sequence that happened in Metal Gear Solid 2, when Raiden calls Snake on the Codec with a ration equipped and comments about Rose's cooking.

MGS3 references

Metal Gear Solid 3 reference
When Drebin and Little Grey jump off of the Stryker, they will land in Naked Snake's pose from Metal Gear Solid 3, when he first arrives for the Operation Virtuous mission.

Equip the Patriot gun to hear music from Metal Gear Solid 3: Snake Eater.

Press L1 to view the description for the Mosin-Nagant. It mentions The End and his sniper duel with Big Boss.

Multi-player mode: Remove frosty breath

When playing in stages where your breath frosts, have Snake play dead while prone. His frosty breath will no longer be seen by others.

New combat vests

Clear the single-player game once.

No More Camo

Shake the Sixaxis controller to return Snake's Octocamo to its neutral (black and blue) pigmentation.

Otacon codes

Enter one of the following codes instead of the one that Otacon mentions at Shadow Moses. Ignore the "Access Denied" message.

100,000 DP: Enter 14893 as a code.
iPod song: Enter 78925 as a code.
iPod song: Enter 13462 as a code.

Otacon's extra passwords

Put these in instead of the code Otacon tells you to at Shadow Moses. You will get the Access Denied scene but afterwards you will get the bonus.

PasswordEffect
1289320% off on store
78925 or 13462iPod song

Passwords

Successfully complete the game to unlock the "Password" option at the "Extras" menu. Enter one of the following case-sensitive passwords to unlock the corresponding bonus when another game is started or a saved game is resumed. Note: The iPod songs will become available when the Mk II first can be used.

Desert Eagle long barrel: Enter deskyhstyl as a password.
MK.23: Enter mekakorkkk as a password.
Mosin Nagant: Enter mnsoymsyhnto as a password.
"Desperate Chase" iPod song: Enter thomas as a password.
"Gekko" iPod song: Enter george as a password.
"Midnight Shadow" iPod song: Enter theodore as a password.
"Mobs Alive" iPod song: Enter abraham as a password.

PlayStation 3

In the Act 1 briefing there is a PlayStation3 on the second floor of the plane.

Go upstairs on the Nomad during the Act 1 briefing to see Sunny unpacking her PS3 and PSP.

In the Act 2 briefing, there is a PlayStation3 on the table.

Next time you send out the MK-2, look over Snake's shoulder by tilting the camera. He is using a PlayStation3 controller to control it.

If you use a Sixaxis controller against Psycho Mantis he says, "What? No vibration!" and the flashbacks show the Sixaxis.

Use the Codec to call Rose during the fight with Screaming Mantis. Campbell will tell you to switch controller ports. Rose will get angry and say there are not any controller ports because this is on a PlayStation3.

Policenauts reference

One of the backgrounds on Otacon's computer is a scene from Policenauts.

Reducing stress/gaining psyche

Sit in a box to reduce stress faster, this also regains Psyche.

standing/crouching/lying in shade will also reduce stress quicker.

When in a cutscene you lose some due to information/insults/ect. tap X repeatedly to regain some.

Shoot from inside a dumpster

There are dumpsters throughout the game which you can use to hide. Move in front of them and press Triangle when the prompt appears. Once inside, if you have a handgun, for example The Operator, you can hold L1 to lift up the lid of the dumpster and aim your gun from inside.

Snatchers

The suit Snake wears in Act 3 is a homage to Gillian Seed, from Snatchers. The "Dr. Madnar" mentioned in Act 3 is a reference to a scientist from Snatchers.

Solar gun and statue locations (to get solargun)

The statues required to unlock the Solar Gun can be found at the following locations:

Frog: In Act 1: Middle East, Advent Palace garage, atop a vehicle.

Octopus: In Act 2: South America, in the Research Lab Boss room, upper right room during the human phase of the fight.

Raven: In Act 3: Europe, on the top floor of the human phase of the Boss fight.

Wolf: In Act 4: Shadow Moses, behind Snake's starting spot in the human phase of the Boss fight.

Mantis: In Act 5: Outer Heaven, near the northern-most door during the human phase of the fight.

--NOTE--
these will only be available if you defeated the boss NON-LETHALLY (mk II, mosin nagant, stun grenades, CQC, ect). If you killed the boss they will not be available.

--NOTE 2--
the solar gun causes enemies to drop weapons and does extreme damage to Vamp. To reload you must stand in sunshine and snake will point the gun up to the sky and shout SUNLIGHT!

Some secret 'L1' bits in cutscenes

Naomi's chest: In Act 2, after Snake loses his Psyche when Namoi tells him how long he has, press L1 to look at her chest and recharge Snake's Psyche.

Naomi upskirt: In Act 2, when Snake's talking to Naomi and drops his cigarette, use the hidden L1 option to look up her skirt.

Psycho Mantis' ghost: During the first intermission sequence with Beauty and the Beast, after using the option to look through L1, look to the left to see the ghost of Psycho Mantis.

Sorrow: During the Psycho Mantis intermission sequence, keep L1 held. When Psycho Mantis disappears, you will hear Sorrow say something. Hold L1 (even though you are not prompted), and you will see Sorrow. Press X to start a flashback.

Star wars references

In Shadow Moses when Snake is about to get on the lift to fight Vamp, watch as the camera circles around the lift area to see a Darth Vader helmet on the floor.

In the Act 5 briefing, while Mei Ling is explaining the situation to everyone she says something about it being an impenetrable fortress or something similar. Snake then says, "He has his very own Death Star."

Stealth Tips online

When playing as Snake in the online stealth mode, you should avoid lit areas so you won't cast shadows. Also, in stages where characters emit frosty breath, have Snake play dead while prone to make Snake's breath disappear.

The Naked Gun

Drebin sells laundered guns, called "Naked Guns". Drebin's name is a reference to Frank Drebin from The Naked Gun movies.

Weapons

Complete the indicated task to unlock the corresponding weapon.

WeaponHow to unlock
BandannaComplete a single-player session without killing anyone (including bosses). You can do this on any difficulty
Desert Eagle, Long BarrelEarn the Fox emblem on a single-player session
Digital CameraIn the Nomad vehicle during the mission intermission; you can unlock a special photo by picking up this item in stage 4 instead of earlier
Patriot Future Assault WeaponEarn the Big Boss emblem on a single-player session
Race (Ricochet) GunClear the single-player game once
Scanning Plug SLog more than 10 hours of Metal Gear Online play time on the same profile as your Metal Gear 4 game. You purchase this from Drebin
Solar GunCollect the five statues (those of the four Battle Beauties and the Frog Soldier/Haven Troopers in stage 1) using non-lethal means on their respective idols
Stealth ItemComplete a single-player session without instigating a single alert (caution is okay, but not alert). You can do this on any difficulty
Thor 45-70Earn the Fox Hound emblem on a single-player session
World War IPistol Earn the Hound emblem on a single-player session

Weird man following snake

When tailing the resistance member, if you look behind Snake, you will occasionally notice a man with a hat and trenchcoat also tailing him. This is how the Scarabs found the hideout. If you try to shoot him, he will duck away around the corner and disappear.

World Of Warcraft

Leeroy Jenkins' grave can be seen directly behind Big Boss's. It will come into view when the camera pans around the area before Old Snake puts the gun into his mouth. You can also see it again while Old Snake is carrying Big Boss to The Boss's grave.

Zone Of The Enders

When you look at the briefing scene, Otacon's computer's desktop picture is the main character from Zone Of The Enders, another game directed by Hideo Kojima.

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