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