Kill 4 enemies in a row with headshots in the single player campaign.

Kill 5 enemies with one shot while in the AC-130 gunship.

Kill all 4 tanks on the overpass with the Javelin missile in 'The Bog'.

Kill an enemy while blinded by a flashbang in the single player campaign.

Infiltrate a cargo ship.

Paralyze a licker's sense of hearing.

Change your disguise during The Final Test.

Defeat Super Tyrant with 5+ minutes left until detonation.

Escape from the sewers.

Assassinate a Target without getting spotted.

Complete Ada's segment.

Shoot Tyrant's hat off his head.