Kill 15 enemy using concentration mode.
Shoot an enemy through a wall.
Complete Act 1.
Kill all enemies attacking your pontoon from the riverside on 'Weaken The Regime' level.
Kill 2000 enemies. (Multiplayer)
Kill 500 people using sniper rifle. (Multiplayer)
Kill 250 people using sniper rifle. (Multiplayer)
Kill 250 people using pistol. (Multiplayer)
Deliver 100 headshots.
Deliver 50 headshots.
Kill 10 birds.
Shoot 5 cable lines using sniper rifles.
Kill 2 enemy with one grenade.
Kill 2 enemy with one shot.
Complete Act 2.
Kill a total of 30 enemies with Browning gun.
Kill 10 enemies with throwing knives.
Collect all secrets.
Finish the game on Hard difficulty.
Finish the game on Normal difficulty.
Finish the game on Easy difficulty.
Complete Act 4.
Complete Act 3.
Win 50 rounds playing online. (Multiplayer)
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