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
Collect all logs through out the game
Finish multiplayer ‘Cargo’ level without taking any damage
Find all ‘secret’ collectibles
Complete all single player levels 1-5
Complete ‘Cargo’ multiplayer level in 10 minutes or less
Finish ‘Primed’ single player level with 300000 or more overall score
Kill 1000 aliens in single player
Achieve a balance of 20000 credits or more
Complete 3 Co-op Assault multiplayer games
Complete any multiplayer level
Without the player taking damage kill 50 aliens in single player