Campaign Veteran
Single player completed
25 ✓ June 27th, 2011
Against the Odds
Completed the Single Player game on Elite difficulty
25 ✓ June 27th, 2011
Team Veteran
Complete "Hydroponics" in Co-op Assault
20 ✓ August 7th, 2011
Fighting Light
Finished a single player level without using any items
20 ✓ August 11th, 2011
Hard to Kill
Finished CO-OP Assault level 1,2 or 3 with no player losing a life
20 ✓ August 7th, 2011
Knowledge is Power
Picked up 100% of the logs
20 ✓ August 11th, 2011
No Stone Unturned
Found all secret collectibles
10 ✓ January 1st, 1753
Elite Force
Killed 50 aliens in a row without taking any damage
10 ✓ August 11th, 2011
Born to Kill
Killed a total of 25 aliens in single player
10 ✓ June 12th, 2011
Break Out the Arsenal
Used all weapons and items in the game
10 ✓ June 26th, 2011
Killing Spree
Killed 20 aliens in 30 seconds
10 ✓ June 13th, 2011
Ain't got time to bleed!
Finished 'Interface' single player level without using any health packs
20