Steam achievements:
ACHIEVEMENT – HOW TO UNLOCK
Battle-hardened – Complete all single player levels 1-5.
Elite Unit – Complete all single player levels 1-5 on Elite difficulty.
Exterminator – Kill 1000 aliens in single player.
Frag-master – Kill 10 aliens with one frag grenade.
Hidden Treasure – Find all secret collectibles.
Immobilised – Stun 10 aliens with one stun grenade.
Meat Grinder – Kill 250 aliens on any multiplayer Survivor level.
More Speed, Less Haste – Complete ‘Vengeance’ single player level on Veteran difficulty in 17 minutes or less.
Seasoned Squaddie – Complete any multiplayer level.
Survivor – Stay alive for 8 minutes on any single player Survivor level.
Tank – Take 500 damage on ‘Determination’ single player mission without dying.
The Informed – Collect all the logs throughout the game.
Time to Party – Complete 3 Co-op Assault multiplayer games.
