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