Complete the indicated task to unlock the achievement.

Achievement	How to unlock
"Alpha" Group	Survive 40 waves in survival mode on hard difficulty.
Baba-Yaga	Neutralize 100 enemies with a pistol.
Banker	Accumulate 100,000 credits in survival mode.
Captain	Complete the story mode on hard difficulty.
Common business	Get Samantha's ending.
Deck builder	Equip 3 perks at the same time.
Demoman	Neutralize 100 enemies with explosives.
Die Hard	Neutralize 100 enemies with a SMG.
Dinner for two	Get Jade's ending.
Discipline issue	Get Olivia's ending.
Dominating	Neutralize 500 enemies.
Fast start	Survive 10 waves in survival mode.
First blood	Neutralize 10 enemies.
General	Complete the story mode on insane difficulty.
Halfway	Survive 20 waves in survival mode.
Henry	Survive 40 waves in hardcore mode.
Hitman	Neutralize 100 enemies using a weapon with a silencer.
Hotline	Neutralize 100 enemies with a knife.
It's high noon	Neutralize 100 enemies with a revolver or lever rifle.
Lady Death	Neutralize 309 enemies with a sniper rifle.
Lord of War	Unlock all weapons in the arsenal.
Marine	Survive 40 waves in survival mode on easy difficulty.
Mission complete +	Complete the story mode +
Mission complete!	Complete the story mode.
Nothing is over!	Neutralize 503 enemies with a machine gun.
Private	Complete the story mode on easy difficulty.
Rampage	Neutralize 100 enemies.
Ranger	Survive 40 waves in survival mode on normal difficulty.
Sergeant	Complete the story mode on normal difficulty.
Skullcrusher	Survive 40 waves in survival mode on insane difficulty.
Terminator	Destroy 100 drones.
The Art of Shotgun	Neutralize 100 enemies with a shotgun.
The Hurt Locker	Destroy 100 landmines.
The Nailer	Neutralize 100 enemies with a battle rifle.
Travis!	Neutralize 100 enemies with an assault rifle.
Unstoppable	Neutralize 1000 enemies.
Wanted	Neutralize 100 enemies with a critical shot.