Defeat 5 enemies, each one taking damage from a handgun, long-gun, and melee

Stealth take-down 10 armored enemies with melee by first removing their helmets without being detected

Destroy the helicopter without defeating any other enemies

Defeat 4 enemies with one C4 detonation

Defeat 20 enemies firing from-the-hip

Defeat 20 enemies blind-firing from cover

Defeat 10 enemies with headshots in a row

Complete the Game

Find all the treasures

Commandeer 6 vehicles by jumping on them and kicking out the driver

Ask Skeleseer a question

Listen to all optional conversations

Break stealth and re-enter stealth successfully