Kill Streaks

3 kills - UAV - Shows enemies on the minimap.
4 kills - Care Package - Airdrop a random killstreak or ammo.
4 kills - Counter UAV - Temporarily disables enemy radar.
4 kills - Sentry Gun - Airdrop a placeable sentry gun.
5 kills - Predator Missile - Remote control missile.
6 kills - Precision Air Strike - Call in a directional airstrike.
7 kills - Harrier Strike - Call in a Harrier Strike.
7 kills - Attack Helicopter - Call in a support helicopter.
8 kills - Emergency Airdrop – Calls in four care packages.
9 kills - Pave Low - Heavy armored assault helicopter.
9 kills - Stealth Bomber – An undetectable bombing run.
11 kills – Chopper Gunner - Be the gunner of an attack helicopter.
11 kills - AC-130 - Be the gunner of an AC-130.
15 kills - EMP – Temporarily disable enemy electronics.
25 kills - Tactical Nuke - Deploy a tactical nuke (ends the game).

Unlockable                      How to unlock

Back in the Saddle (Bronze) - Help train the local militia.
Black Diamond (Silver) - Complete ‘Cliffhanger’ on Veteran Difficulty.
Blackjack (Bronze) - Earn 21 stars in Special Ops.
Charlie On Our Six (Bronze) - Earn 8 stars in Special Ops.
Cold Shoulder (Bronze) - Infiltrate the snowy mountain side base.
Colonel Sanderson (Bronze) - Kill 7 chickens in under 10 seconds in ‘The Hornet’s Nest’.
Danger Close (Bronze) - Get hand picked for Shepherd’s elite squad.
Desperado (Bronze) - Kill 5 enemies in a row using 5 different weapons or attachments in Single Player or Special Ops.
Desperate Times (Bronze) - Execute the plan to help the Americans.
Downed but Not Out (Bronze) - Kill 4 enemies in a row while downed in Special Ops.
Drive By (Bronze) - Kill 20 enemies in a row while driving a vehicle in Single Player or Special Ops.
Ends Justify the Means (Silver) - Complete ‘Contingency’ on Veteran Difficulty
First Day of School (Silver) - Complete ‘S.S.D.D’ and ‘Team Player’ on Veteran Difficulty.
For the Record (Silver) - Complete the Single Player campaign on any difficulty.
Ghost (Bronze) - Plant the C4 in ‘Cliffhanger’ without alerting or injuring anyone in the blizzard.
Gold Star (Bronze) - Earn 1 star in Special Ops.
Homecoming (Silver) - Complete ‘Of Their Own Accord’, ‘Second Sun’, and ‘Whiskey Hotel’ on Veteran Difficulty.
Honor Roll (Bronze) - Earn at least 1 star in each Special Op mission.
Hotel Bravo (Bronze) - Earn 4 stars in Special Ops.
Is That All You Got? (Platinum) - Earn all available Trophies for Modern Warfare® 2.
It Goes to Eleven (Bronze) - Earn at least 1 star in 11 different Special Op missions.
I’m the Juggernaut… (Bronze) - Kill a Juggernaut in Special Ops.
Knock-knock (Bronze) - Kill 4 enemies with 4 shots during a slow-mo breach in Single Player or Special Ops.
Leave No Stone Unturned (Bronze) - Collect 45 enemy intel items.
Look Ma Two Hands (Bronze) - Kill 10 enemies in a row using akimbo weapons in Single Player or Special Ops.
No Rest For the Wary (Bronze) - Knife an enemy without him ever knowing you were there in Single Player or Special Ops.
Off the Grid (Silver) - Complete ‘Just Like Old Times’ and ‘Endgame’ on Veteran Difficulty.
Operational Asset (Bronze) - Earn all 3 stars in at least 5 different Special Op missions.
Operative (Silver) - Earn all 3 stars in at least 10 different Special Op missions.
Out of the Frying Pan… (Bronze) - Complete the mission in the airplane graveyard.
Pit Boss (Bronze) - Run The Pit in ‘S.S.D.D’ and finish with a final time under 30 seconds.
Prisoner #627 (Silver) - Complete ‘The Only Easy Day… Was Yesterday’ and ‘The Gulag’ on Veteran Difficulty.
Professional (Silver) - Earn all 3 stars in at least 15 different Special Op missions.
Queen takes Rook (Silver) - Complete ‘Loose Ends’ and ‘The Enemy of My Enemy’ on Veteran Difficulty.
Red Dawn (Silver) - Complete ‘Wolverines!’ and ‘Exodus’ on Veteran Difficulty.
Royale with Cheese (Bronze) - Defend Burger Town.
Soap on a Rope (Bronze) - Storm the gulag.
Some Like it Hot (Bronze) - Kill 6 enemies in a row using a thermal weapon in Single Player or Special Ops.
Specialist (Silver) - Earn 30 stars in Special Ops.
Star 69 (Gold) - Earn 69 stars in Special Ops.
Tag ‘em and bag ‘em (Bronze) - Find Rojas in the Favelas.
Ten plus foot-mobiles (Bronze) - Kill at least 10 enemies with one Predator missile in Single Player or Special Ops.
The Harder They Fall (Bronze) - Kill 2 rappelling enemies in a row before they land on their feet in Single Player or Special Ops.
The Pawn (Bronze) - Assault Makarov’s safe house.
The Price of War (Gold) - Complete the single player campaign on Hardened or Veteran Difficulty.
The Road Less Traveled (Bronze) - Collect 22 enemy intel items.
Three-some (Bronze) - Kill at least 3 enemies with a single shot from a grenade launcher in Single Player or Special Ops.
Turistas (Silver) - Complete ‘Takedown’ and ‘The Hornet’s Nest’ on Veteran Difficulty.
Two Birds with One Stone (Bronze) - Kill 2 enemies with a single bullet in Single Player or Special Ops.
Unnecessary Roughness (Bronze) - Use a riot shield to beat down an enemy in Single Player or Special Ops.
Whiskey Hotel (Bronze) - Take back Whiskey Hotel.

Unlockable                                      How to unlock

Bull Fighter (Bronze) - Inflicted critical counter-attack damage at least 10 times in Versus Mode or Online Mode
Cannonball (Bronze) - Cleared Arcade Mode within 6 minutes
Champ (Bronze) - Competed in 100 or more battles in Online Mode
Gladiator (Bronze) - Won 25 or more battles in Online Mode
Hero (Silver) - Won 50 or more battles in Online Mode
King of Fighters (Platinum) - Unlock all trophies
Legend (Gold) - Won 100 or more battles in Online Mode
Lightning (Silver) - Cleared Arcade Mode within 4 minutes
Master (Silver) - Competed in 300 or more battles in Online Mode
Razor Edge (Silver) - Executed a counter-attack at least 50 times in Versus Mode or Online Mode
Rookie (Bronze) - Competed in 10 or more battles in Online Mode
Slow Starter (Bronze) - Cleared Arcade Mode within 10 minutes
Sniper (Bronze) - Executed a counter-attack at least 30 times in Versus Mode or Online Mode
Speed King (Gold) - Cleared Arcade Mode in under 3 minutes and 30 seconds
Speed Star (Bronze) - Cleared Arcade Mode within 8 minutes
Striker (Bronze) - Executed a counter-attack at least 10 times in Versus Mode or Online Mode
Veteran (Bronze) - Competed in 30 or more battles in Online Mode
Warrior (Bronze) - Won 5 or more battles in Online Mode

Cheats                               Result

MAPMAYHEM - Bonus Multiplayer Map Pack Featuring Four Maps
HARDHITTER - Unlocks golden sledgehammer for single player use

Unlockable                                                   How to unlock

Cool Turrets (Turrets Don't Overheat) - Get the Tank Buster trophy (Blow up 100 small hydrogen canisters)
Max Morale (Max Morale in all Sectors) - Get the Don't Tread on Me trophy ( Liberate Oasis Sector)
Max Technology (EDF, Guerillas, and Marauders receive superior weapons and armor) - Get the Red Dawn trophy (Liberate Mars)
No Green Alert (Alert Status Never at Green) - Get the One Man Army trophy (Get 25 killing sprees during campaign)
Super Debris (Explosion and Collision Damage Greatly Increased) - Get the Coming Down! trophy (Destroy 50 EDF owned buildings)
Super Hammer (Increase Hammer Damage) - Get the Best Friends Forever trophy (100 kills with the sledgehammer during campaign)
Super Sprinting (Sprint speed increased by 50%) - Get the Working The Land trophy (Mine all ore locations)
Super Toughness (Increased Physical Resistance) - Get the Clean and Righteous! trophy (Destroy 5 High Importance Targets)
Unlimited Ammo (Unlimited ammo for all weapons) - Get the Freed Space trophy (Destroy 50 EDF flyers) A Winner is You! (Bronze) - Win 250 matchmaking games.
Battle Scarred (Bronze) - Earn 10,000 XP in Multiplayer.
Best Friends Forever (Silver) - Kill 100 EDF with the sledgehammer during the Campaign.
Broken Supply Line (Bronze) - Destroy 250 EDF supply crates.
Can't Get Enough (Bronze) - Play every mode on all maps in Wrecking Crew.
Check Your Map (Bronze) - Finish a match on every map in Multiplayer.
Clean and Righteous! (Bronze) - Destroy 5 High Importance targets.
Coming Down! (Bronze) - Destroy 50 EDF owned buildings.
Coup D'etat (Bronze) - Liberate Eos Sector.
Courier of Pain (Bronze) - Score 5,000 kills in Multiplayer.
Death From Above (Bronze) - Liberate Dust Sector.
Detective (Bronze) - Complete 8 hidden challenges in Multiplayer.
Disaster Area (Silver) - Destroy 1 billion credits worth of EDF property.
Doing Your Part (Bronze) - Kill 10 enemies in a Matchmaking Match.
Don't Tread On Me (Bronze) - Liberate Oasis Sector.
Doozer (Bronze) - Reconstruct a Damage Control target.
Experimenter (Bronze) - Complete 4 hidden challenges in Multiplayer.
Field Tested (Bronze) - Earn 1,000 XP in Multiplayer.
Free Your Mind (Bronze) - Destroy all instances of propaganda.
Freed Space (Bronze) - Destroy 50 EDF flyers.
Freedom Fighter (Bronze) - Complete 50 Guerrilla Actions.
Friendly Skies (Bronze) - Liberate Badlands Sector.
Got Any Fingers Left? (Bronze) - Beat all Pro times in Demolitions Master.
Grab Some Popcorn (Bronze) - Enter Spectator mode and enjoy the show!
Guerrilla (Bronze) - Complete 25 Guerrilla Actions.
Insurgent (Bronze) - Complete 5 Guerrilla Actions.
Jack of all Trades (Bronze) - Score 10 kills while wearing each backpack.
Juggernaut (Bronze) - Destroy a Siege target.
Just the Beginning (Bronze) - Win a Matchmaking match.
Lost Memories (Bronze) - Locate all missing radio tags.
Mad Genius (Silver) - Complete 16 hidden challenges in Multiplayer.
Martian Tea Party (Silver) - Complete 2 missions for the Red Faction.
One Man Army (Bronze) - Complete 25 killing sprees during the Campaign.
Party Time (Bronze) - Play all Wrecking Crew modes once.
Power to the People (Bronze) - Raise the Morale of 3 sectors to 100%.
Red Dawn (Gold) - Liberate Mars.
Red Faction Member (Gold) - Play online with another player who has completed the Campaign.
Red Faction: Guerrilla (Platinum) - Unlock all Trophies in Red Faction: Guerrilla
Revolutionary (Silver) - Complete all Guerrilla Actions.
Spread the Word (Bronze) - Liberate Parker Sector.
Start of Something Special (Bronze) - Play 5 Matchmaking matches.
Tank Buster (Bronze) - Blow up 100 small hydrogen tanks.
The High and Mighty (Bronze) - Kill a flying opponent using a remote charge stuck to them.
Tools of the Trade (Bronze) - Score a kill with every weapon in Multiplayer.
Topher Would Be Proud (Bronze) - Play 250 matchmaking games.
Try Anything Once (Bronze) - Finish a match in every mode.
War Veteran (Gold) - Earn 100,000 XP in Multiplayer.
Warp Speed (Bronze) - Beat all Transporter Pro times.
Welcoming Committee (Bronze) - Complete the Tutorial mission.
Working the Land (Bronze) - Mine all ore locations.
Wrecking Ball (Bronze) - Score 25 million points worth of destruction in Wrecking Crew.

A Greater Purpose (Silver) - Complete Redemption.
Ares Bloodlust (Bronze) - Destroy the 4 Marauder War Totems.
Bound in Blood (Bronze) - Complete Rescue.
Deliverance Defender (Silver) - Complete Marauder Actions.
Family Vengeance (Silver) - Complete Retribution.
Mobile Bombs (Bronze) - Destroy 100 EDF vehicles.
Purge the Valley (Bronze) - Break the EDF Control of the Mariner Valley.
Structural Integrity (Bronze) - Destroy all Medium and High Priority Targets in Mariner Valley.
The Power of One (Bronze) - Collect 75 Marauder Power Cells.
Tumbling Down (Bronze) - Beat all Pro times in Mariner Valley Demo Masters and Transporters.

Unlockable                                           How to unlock

A Real Challenge (Gold) - Acquire at least one star in each of the Challenge Rooms 1 - 56.
Cat burglar (Bronze) - Get to the boss of Area 05 within one minute and thirty seconds.
Clean as a whistle (Bronze) - Clear Area 02 without touching a slime blob.
Elite Commando (Silver) - Clear the game on Super Hard.
Faster Than a Speeding Bullet (Bronze) - Block 100 projectiles using the claw.
H4><0rz (Bronze) - Hack through all the hacking games on Hard.
Intel Collector (Silver) - Acquire all database logs.
Meet with annihilation (Bronze) - Kill all foot soldiers and enemy trucks on a Meet With Enemy sequence.
One Dozen Yashichis (Silver) - Collect all 12 hidden Yashichis - one from each of Area 01 - 12.
Pacifist Pride (Bronze) - Clear any of Area 01 - 12 without firing your gun.
Private Arsenal (Silver) - Obtain every weapon and weapon upgrade.
The Emperor's New Clothes (Bronze) - Obtain the Shin Guards, the Bulletproof Vest and the Helmet.