Complete Mission 4 (Any Difficulty Level)

Get 50 headshot kills in Campaign Mode

Destroy 100 blast roots

Kill 25 enemies firing the Auger through an object

Kill 2+ enemies with one Rossmore blast

Kill 3 or more Military Chimera with a single Grenade

Kill 1 000 Zombies

Fully Upgrade All Stats Of Any Weapon In Campaign Mode

Help Your Country To Clear The Virus Infection

Complete Mission 1 (Any Difficulty Level)

Acquire the Bow of Apollo

Rip apart 1 Olympus Sentry

Hey! Got time to kill? Try to clear Arcade Mode on Medium or higher! That's all you gotta do!