Defeat 4 enemies with the vehicle in 20 seconds

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

Defeat 20 enemies with C4

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

Use every gun in the game

Defeat 5 consecutive enemies with the silenced pistol without being detected

Ram 10 motorcycles

Destroy a vehicle in Chapter 9 with an explosive

Ask Skeleseer a question

Listen to all optional conversations

Find 35 treasures

Defeat 10 enemies with headshots in a row