First blood - Make your first kill.
Assault - Kill 10 aliens.
Warming up - Kill 100 aliens.
Ripley - Flame 1000 aliens.
Seconds out - Reach an exit deck lift with 1 second remaining.
Never get it back - Watch the Alien Breed prologue.
Scavenger - Collect every pickup on a level.
Run, stone run! - Complete Alien Breed level 2 without firing your weapon.
Locked and loaded - Purchase all weapons from the shop.
Who's the boss? - Defeat a boss without firing the assault rifle.
You're only supposed to blow the bl**dy doors off - Complete a level using no keys.
There's no I in team - Complete a level in co-op.
He shoots, he scores - Score 1,000,000 co-op points on a level.
ISR4-C - Complete 17 co-op games.
Saving ammo - Kill 2 aliens with one shot.
Smashing - Die together in the mashers on Convergence level 4.
Roxanne - Kill 50 aliens during a countdown.
Burn, baby burn - Defeat a boss alien together with flamethrowers.
Tread carefully - Complete Alien Breed SE level 11 in co-op without tripping the alarm.
Teamster - Score 17,171,717 points total single or co-op play.
Hard as nails - Complete Alien Breed.