Frag-master
Killed 5 aliens with one Frag Grenade
30 ✓ August 10th, 2011
Elite Unit
Single player completed on Elite difficulty
25 ✓ August 10th, 2011
Battle-hardened
Single player completed
25 ✓ August 10th, 2011
Exterminator
Killed 1000 aliens
20 ✓ August 10th, 2011
Immobilised
Stunned 5 aliens with one Stun Grenade
20 ✓ August 5th, 2011
Hidden Treasure
Found all secret collectibles
10 ✓ August 10th, 2011
Tank
Took 500 damage without dying
10 ✓ August 10th, 2011
The Informed
Picked up all the logs
10 ✓ August 10th, 2011
Seasoned Squaddie
Completed a level in multiplayer
20 
More Speed, Less Haste
'Vengeance' completed in 17 minutes or less
10 
Survivor
Stayed alive for 8 minutes in Survivor mode
10 
Meat Grinder
Killed 250 aliens during multiplayer Survivor mode
10