Call of Duty: Modern Warfare 3 (PlayStation 3)

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Flips

If you shoot somone in the shoulder with a desert eagle, sniper rifle, or a shotgun. They get launched into a flip.

Level bonuses

Reach the indicated level to unlock the corresponding bonus.

Level 5: Throwing Knife
Level 6: SCAR-L (Assault Rifle)
Level 8: SPAS-12 (Shotgun)
Level 10: P99 (Handgun)
Level 11: Blind Eye
Level 12: Dragunov (Sniper)
Level 13: Scrambler (Tactical)
Level 14: PKP Pecheneg (LMG)
Level 15: Hardline
Level 15: Revenge (Death Streak)
Level 16: MP9 (Machine Pistol)
Level 18: CM901 (Assault Rifle)
Level 19: Sitrep
Level 20: Specialist (Strike Package)
Level 21: EMP Grenade (Tactical)
Level 22: A550 (Sniper)
Level 22: Extreme Conditioning
Level 24: Javelin (Launcher)
Level 26: AA-12 (Shotgun)
Level 27: Assassin
Level 28: PP90M1 (SMG)
Level 29: Smoke Grenade (Tactical)
Level 30: MP412 (Handgun)
Level 30: Steady Aim
Level 32: Type 99 (Assault Rifle)
Level 32: Final Stand (Death Streak)
Level 36: Skorpion (M. Pistol)
Level 37: Bouncing Betty (Anti Personnel Mine)
Level 38: P90 (SMG)
Level 39: SCAVENGER
Level 40: Stinger (Launcher; vehicle lock-on only)
Level 42: G36C (Assault Rifle)
Level 44: RSASS (Sniper)
Level 45: Trophy System (deflects enemy explosives/missiles)
Level 46: .44 Magnum (Handgun)
Level 47: Overkill
Level 48: Striker (Shotgun)
Level 50: ACR (Assault Rifle)
Level 51: Martyrdom (Death Streak)
Level 52: XM25 (Launcher)
Level 53: Claymore (Anti Personnel Mine)
Level 54: MK46 (LMG)
Level 55: Dead Silence
Level 56: PM9 (SMG)
Level 57: Dead Man's Hand (Death Streak)
Level 58: Five Seven (Handgun)
Level 60: MK14 (Assault Rifle)
Level 61: Tactical Insertion (marker to place your next re-spawn)
Level 62: Model 1887 (Shotgun)
Level 64: M320 GLM (Launcher)
Level 66: MSR (Sniper)
Level 68: AK-47 (Assault Rifle)
Level 69: C4 Explosives
Level 70: G18 (Machine Pistol)
Level 71: Hollow Points (Death Streak)
Level 72: M60E4 (LMG)
Level 74: MP7 (SMG)
Level 76: Desert Eagle (Handgun)
Level 77: Portable Radar (shows enemy moment within its radius)
Level 78: FAD (Assault Rifle)
Level 80: RPG-7 (Launcher)

Out Of Map For Resistance

First of all, go to the main garden and have 2 people with you (both with a riot shield) then put his back towards the building and you facing him and a tree on top of the bricks. Then run and hit him with your riot shield and you'll shoot up on top of the building then run around until you find a spot to hop down and you are out.

Perks

The following perks are available.

Tier 1
Blind Eye: Air Support and Sentries are undetectable.
Extreme Conditioning: Increased sprint time.
Pro: Bullet damage shows target on mini-map.
Pro: Climbing speed increased.
Pro: Fast Weapons Change.
Pro: Fast lock-on for rockets. Increased bullet damage to vehicles.
Pro: Get more ammo.
Recon: Explosive damage shows target on mini-map.
Scavenger: Get ammo from dead enemies.
Sleight of Hand: Fast Reloading.

Tier 2
Assassin: Immunity to UAV, portable radar, thermal, and heartbeat.
Blast Shield: Increased explosive resistance.
Hardline: Killstreaks require one fewer kill.
Overkill: Carry two primary weapons.
Pro: Faster recovery from using grenade/equipment.
Pro: Immunity to CUAV and EMP, no red crosshair or name over you.
Pro: Resistance to flashbangs and stuns.
Pro: Second primary can have two attachments.
Pro: Two assists count as kill towards killstreaks. Deathstreaks require one fewer death.
Quickdraw: Faster Aiming.

Tier 3
Dead Silence: Quieter movement, recon does not work as well against you.
Marksman: Identify targets at more distant range.
Pro: Add delay to enemy claymores before exploding.
Pro: Do not take any fall damage.
Pro: Hold your breath for longer when sniping.
Pro: Opposing team’s footsteps make more noise.
Pro: Weapon ready more quickly after sprint.
SitRep: Detect Enemy Explosive and Tac Insert.
Stalker: Increased movement speed while aiming down the sites.
Steady Aim: Increased accuracy while firing from hip.

Russian S4

The S4 is the russian's version of the C4. It is very effective. It does 2x the amount of damage (3x if you have 35+ kills. ) It also temporarily blinds and slows all enemies within 25 ft. From it. To get the S4, you first have to have a class with 2 flash or concussion grenades and one C4. Then, throw both flash/con grenades and make sure they both affect someone. Without dying, you can now throw your C4 which is now an S4. You will unlock the achievement "Explosions in Russia" and get the trophy "Power Blast".

Specialist - Rank Faster

Once you hit level 20, use the Specialist package. Make a class, give it hardline and use the Specialist package. It not only gives you extra points at kills 1, 3, 5, and 7 but also helps you complete the perk's challenges AND the Specialist Challenges for each perk. You are completing the perks and each perk has a Specialist perk challenge to it. For example, if at 1 kill you unlock Assassin, you are completing Assassin Challenges while also completing the Specialist Challenge entitled 'Assassin.' This equates to a boatload of XP once you start moving through these challenges. Not to mention the 200 XP per kill at kills 1, 3, 5, and 7 every time. You will be hard pressed to find a faster way to gain XP while playing any kill heavy mode. You get EXTRA points for kills 8, 9, 10 etc. as long as you have all the perks on and have not died so it's like double XP in on itself.

Various Trophies

Complete the following tasks to unlock PlayStation 3 trophy rewards.

TrophyHow to unlock
50/50 (Bronze)Complete a Special Ops Mission Mode game with the same number of kills as your partner.
All In (Platinum)Earn all available Trophies for Modern Warfare 3.
Arms Dealer (Bronze)Buy all items from the Survival Weapon Armory.
Back Seat Driver (Bronze)Track down Volk. Complete 'Bag and Drag' on any difficulty.
Back in the Fight (Bronze)Start the Single Player Campaign on any difficulty.
Bad First Date (Bronze)Find the girl. Complete 'Scorched Earth' on any difficulty.
Birdie (Bronze)Kill 2 enemy helicopters without getting hit in a Special Ops Survival game.
Brag Rags (Bronze)Earn 1 star in Special Ops Mission Mode.
Carpe Diem (Bronze)Escape the mountain safe house. Complete 'Persona Non Grata' on any difficulty.
City of Lights (Silver)Complete 'Bag and Drag' and 'Iron Lady' on Veteran difficulty.
Danger Close (Bronze)Take down a chopper with an AC-130 smoke grenade in 'Bag and Drag.'
Danger Zone (Bronze)Buy all items from the Survival Air Support Armory.
Defense Spending (Bronze)Buy all items from the Survival Equipment Armory.
Diamond in the Rough (Bronze)Rescue the Russian President. Complete 'Down the Rabbit Hole' on any difficulty.
Flight Attendant (Bronze)Kill all 5 enemies during the zero-g sequence in 'Turbulence.'
For Whom the Shell Tolls (Bronze)Destroy all targets during the mortar sequence with only 4 shells in 'Back on the Grid.'
Frequent Flyer (Bronze)Defend the Russian President. Complete 'Turbulence' on any difficulty.
Get Rich or Die Trying (Silver)Have $50,000 current balance in a Special Ops Survival game.
I Live (Bronze)Survive 1 wave in a Special Ops Survival game.
Informant (Bronze)Collect 22 Intel Items.
Jack the Ripper (Bronze)Melee 5 enemies in a row in Single Player or Special Ops.
Kill Box (Bronze)Kill 20 enemies with the Chopper Gunner in a single run in 'Return to Sender.'
Ménage à Trois (Bronze)Destroy 3 tanks with a single 105mm shot in 'Iron Lady.'
Nein (Bronze)Kill 9 enemies with A-10 strafing runs in 'Scorched Earth.'
No Assistance Required (Bronze)Complete a Special Ops Mission Mode game on Hardened or Veteran with no player getting downed.
One Way Ticket (Bronze)Make it to Westminster. Complete 'Mind the Gap' on any difficulty.
Out of the Frying Pan... (Silver)Complete 'Persona Non Grata', 'Turbulence', and 'Back on the Grid' on Veteran difficulty.
Overachiever (Silver)Earn 48 stars in Special Ops Mission Mode.
Payback (Silver)Complete 'Mind the Gap', 'Goalpost', and 'Return to Sender' on Veteran difficulty.
Requiem (Bronze)Escape the city. Complete 'Blood Brothers' on any difficulty.
Sandstorm! (Bronze)Assault the shipping company. Complete 'Return to Sender' on any difficulty.
Scout Leader (Silver)Collect 46 Intel Items.
Serrated Edge (Bronze)Finish a Juggernaut with a knife in Special Ops.
Storm the Castle (Bronze)Discover Makarov's next move. Complete 'Stronghold' on any difficulty.
Strike! (Bronze)Kill 5 enemies with a single grenade in Single Player or Special Ops.
Survivor (Silver)Reach Wave 10 in each mission of Special Ops Survival mode.
Tactician (Bronze)Earn 1 star in each mission of Special Ops Mission Mode.
The Best of the Best (Gold)Complete the campaign on Hardened or Veteran difficulty.
The Big Apple (Silver)Complete 'Black Tuesday' and 'Hunter Killer' on Veteran difficulty.
The Darkest Hour (Silver)Complete 'Eye of the Storm', 'Blood Brothers', and 'Stronghold' on Veteran difficulty.
This Is My Boomstick (Bronze)Kill 30 enemies with the XM25 in 'Black Tuesday.'
This is the End (Silver)Complete 'Scorched Earth', 'Down the Rabbit Hole', and 'Dust to Dust' on Veteran difficulty.
Too Big to Fail (Bronze)Destroy the Jamming Tower. Complete 'Black Tuesday' on any difficulty.
Unstoppable (Silver)Reach Wave 15 in each mission of Special Ops Survival mode.
Up to No Good (Bronze)Infiltrate the village. Complete 'Back on the Grid' on any difficulty.
Vive la Révolution! (Bronze)Reach the church. Complete 'Eye of the Storm' on any difficulty.
We'll Always Have Paris (Bronze)Escape Paris with Volk. Complete 'Iron Lady' on any difficulty.
Welcome to WW3 (Bronze)Save the US Vice President. Complete 'Goalpost' on any difficulty.
Wet Work (Bronze)Take back New York Harbor. Complete 'Hunter Killer' on any difficulty.
What Goes Up... (Bronze)Destroy all the choppers with only the UGV's grenade launcher in 'Persona Non Grata.'
Who Dares Wins (Silver)Complete the campaign on any difficulty.