Alien Breed 3: Descent achievements

Kill 3 burster aliens with one melee attack (in single player).

Kill 20 aliens with one sentry gun.

Purchase any weapon upgrade (in single player).

Stay alive for 8 minutes or better on any of the Survivor mode single player levels.

Complete 'Vengeance' single player level on Veteran mode in 17 minutes or less.

Find all 'secret' collectibles.

Kill 250 aliens on any of the Survivor mode multi player levels.

Complete any multiplayer level.

Complete all single player levels 1-5 on elite difficulty.

Take 500 damage without dying on 'Determination' single player mission.

Use a Frag Grenade to kill 5 aliens at the same time (in single player).

Collect all logs through out the game.