Here is the full list of all 13 Alien Breed 2: Assault achievements.
Complete all single player levels 1-5 on elite difficulty
Stay alive for 8 minutes on any of the Survivor mode single player levels
Complete all single player levels 1-5
Find all ‘secret’ collectibles
Collect all logs through out the game
Finish ‘Primed’ single player level with 300000 or more overall score
Kill 1000 aliens in single player
Complete 3 Co-op Assault multiplayer games
Achieve a balance of 20000 credits or more
Without the player taking damage kill 50 aliens in single player
Finish multiplayer ‘Cargo’ level without taking any damage
Complete ‘Cargo’ multiplayer level in 10 minutes or less
Complete any multiplayer level