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

Defeat 20 enemies firing from-the-hip

Defeat 10 enemies with headshots in a row

Destroy the helicopter without defeating any other enemies

Complete the Game in Crushing mode

Ask Skeleseer a question

Take a photo at all the photo opportunities

Get through all 3 Axe Fort trials without resetting any boards

Get 30 seconds of total airtime with the vehicle

Perform 10 combo partner takedowns

Defeat 30 enemies with gold weapons

Take a photo at 5 photo opportunities

Find 5 treasures