20 times in a row, pick up ammo while rolling

Defeat 20 enemies by blind-firing while in cover (without aiming with L1/R1)

Defeat 30 enemies with the KAL 7

Defeat ten enemies in a row, alternating hand-to-hand combat and gunplay

Defeat 50 enemies with hand-to-hand combat

Complete level 'The Handler'

Complete level 'The Agent'

Complete level 'The Patriot'

Returned by an artifact

Unlock all translation tiers of a Xenoglyph

In singleplayer, get a quadruple kill with a single Frag Grenade

Complete level 'The Shadow'

Drove a Formula car.