Kill 15 enemies using concentration mode.
Deliver 50 headshots.
Deliver 100 headshots.
Finish the game on Easy difficulty.
Finish the game on Normal difficulty.
Finish the game on Hard difficulty.
Complete Act I.
Complete Act II.
Complete Act III.
Complete Act IV.
Collect all secrets.
Shoot an enemy through a wall.
Kill 10 enemies with throwing knives.
Kill a total of 30 enemies with Browning gun.
Kill 2 enemies with one grenade.
Kill 2 enemies with one shot.
Kill all enemies attacking your pontoon from the riverside on "Weaken The Regime" level.
Kill 250 people using pistol.(Multiplayer)
Kill 250 people using sniper rifle.(Multiplayer)
Kill 500 people using sniper rifle.(Multiplayer)
Kill 2000 people.(Multiplayer)
Win 50 rounds playing online.(Multiplayer)
Kill 10 birds.
Shoot 5 cable lines using sniper rifles.
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