The remaining human colonies are regularly attacked by mutated zombies coming from the depths of an old military laboratory. Your mission is to blast yourself to the lower decks of the underground base, fighting the evil creatures and the radiation. Avoid anomalies on your way (electrical, chemical and radioactive) or find protection against them, otherwise your death will be painful and lingering. Use the ARROW KEYS to move around, press SPACEBAR to place bombs. Use CTRL to use your weapon. Gather weapon parts to unlock the new, more powerfull, weapons. Use 1-3 KEYS to change your weapon. Good luck!