Defeat 30 enemies with the Desert - 5.

Defeat 20 enemies by shooting from the hip (without aiming with L1)

Defeat 250 enemies with headshots

Defeat 50 enemies with the Micro - 9mm.

Defeat 70 enemies with the FAL

Defeat 50 enemies with the Micro - 9mm

Defeat 30 enemies with the Wes - 44.

Platinum

Defeat 50 enemies with hand-to-hand combat.

Defeat 50 enemies with the Dragon Sniper.

Find 55 treasures

Defeat 20 enemies by shooting from the hip (without aiming with the L button).

Use the rear touch pad to climb a rope or chain.