Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Alien Terminator	Kill all enemies in any level.
Highlander	Finish the game without dying.
Junior Explorer	Find all the itens any level.
Master Explorer	Find all the itens in the game.
Megaton	Kill 5 enemies or more with one grenade explosion.
Primal Hunter	Kill all the enemies in one level only using melee damage.
Sharpshooter	Kill all the enemies in one level with ranged attacks while having 100% of accuracy.
Speeder	Beat the best time on every level.
Strafe master	Complete any level without taking damage.
The Escape	Complete the game.
Unusual Sniper	Hit a enemy with a grenade from more than 100 units of distance.