Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Armed and Dangerous	Buy 5 weapons.
Cold Blooded Killer	Kill 2500 enemies.
Crying Assassin	Kill 500 enemies.
Eighty Tales	Complete level East.
Mouse	Complete level Bunker.
Recruit	Kill 10 enemies.
Ruthless	Kill 5000 enemies.
The city	Complete level-City.
The machine for the killing	Kill 10,000 enemies.
Tiny Grasshopper	Kill 100 enemies.
Working	Complete level Outpost.