Single player completed
Single player completed on Elite difficulty
Killed 1000 aliens
Killed 5 aliens with one Frag Grenade
Found all secret collectibles
Stunned 5 aliens with one Stun Grenade
Killed 250 aliens during multiplayer Survivor mode
'Vengeance' completed in 17 minutes or less
Completed a level in multiplayer
Stayed alive for 8 minutes in Survivor mode
Took 500 damage without dying
Picked up all the logs
