Opis: Your aim is to guide Sam in this challenging mission into the darkness and defeat all the enemies. You`ll encounter numerous zombies and poisonous creatures along the journey. Shoot them down as you proceed deep into the dark corridors and find your way to the exit. At the end of every level you`ll encounter a boss and you`ve to defeat him to proceed to the next level. Collect all the weapons and other upgrades that you find along the way. Have fun...