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