Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Alamo!	Enter 10 rooms using team entry.
Alba Varden	Witness ship destruction on the Docks level.
Armorer	Unlock at least 10 new weapons in the campaign mode.
Bad guy	Kill at least 40 enemies during Gang Bang mission.
Been there, done that	Play at least one full round on all maps in competitive mode.
Berserker	Kill at least 3 enemies in a row while being severely wounded.
Brain Surgery	Kill 50 enemies with headshots.
Bullet dodger	During highway chase on Disco level successfully avoid all rockets.
Chain reaction	Kill at least 20 enemies by exploding nearby vehicles.
Clean shot	Complete the campaign mode without killing any civilian.
DEA, keep your hands up!	Complete the game playing as Eddie Guerra.
Deadly Ballet	In a three-player co-op game, make sure everyone scores at least one kill during Team Entry.
Dental Plan	Kill at least 10 enemies with a weapon melee attack.
Did you see that?	Destroy 5 helicopters. (Campaign)
Dirty cop	Successfully pick up 15 secret items.
Do you feel lucky, punk?	Complete the campaign mode on hard difficulty.
Don't miss the train	Successfully manage to pass the train on Juan Chase level.
Drive-by	While riding in a car, shoot 50 enemies.
Driving lessons	Kill at least 10 enemies by ramming them with a vehicle.
Eh...what's up, doc?	In cooperative mode, revive wounded players 5 times.
F.r.a.g.s	Kill 10 enemies using grenades.
FBI! Don't move!	Complete the game playing as Kim Evans.
Good Cop, Bad Cop & The Ugly	Complete the campaign mode playing all 3 different characters.
Guns. Lots of guns.	Use 10 different weapons to kill enemies.
Gunslinger	Kill 20 enemies using dual-wielded firearms.
Heat	Destroy 20 cars.
High Noon	Kill at least 3 enemies between 12.00-12.05 local time.
Highway Patrol	Drive any type of a vehicle for more than 20 miles total.
Interagency Task Force	Play through one entire mission with two other live players.
Ladder Goat	Find Ladder Goat movie on the Fort level.
Level 21	Unlock all weapons in the campaign mode.
Little Bighorn	Win at least one game in competitive mode.
Magpie	Collect at least 75% of secret items on any level, without being caught.
Move! Moving!	Kill 30 enemies by using the Team Cover technique.
Nail'd it!	Finish the downhill car chase on Plantation level without damaging car too much.
None of their business	Successfully finish two Secret Agendas.
Peeper	On the Disco level, watch dancers for at least 30 seconds.
Police Academy	Finish the first chapter.
Police, everybody down!	Complete the game playing as Ben McCall.
Protect and serve	Don't kill any of the civilians on the marketplace during Juan's chase.
Raining Bullets	Shoot over 1000 bullets during the Ghost Town level.
Rio Bravo	Kill 100 enemies using revolvers.
Rubber Duck	Successfully drive off the highway on Convoy level.
SloMo	Kill at least 4 enemies during a single Concentration Mode.
Spy vs. Spy	In cooperative mode, prevent 10 attempts of picking up secret items.
Texas Ranger	Disable 20 enemies with your bare fists.
The Border Crossed Us!	Cross U.S.-Mexican border.
Time is on my side	Kill 50 enemies while having Concentration Mode active.
Tomb Raider	Go through cemetery in less than 3 minutes.
Wild West	Enter the Ghost Town.