You’re a prison guard on mars; you’ve dealt with the toughest meanest badasses around. But one night while on duty a energy wave sweeps through the base you see bodies fly and people die in front of your eyes just before darkness takes you and you fall unconscious. This is where you take over in the middle of the destruction of Prison Obsidian, your only chance is escape, can you make it through the hordes of flesh eating demons.

Obsidian

Related to Singleplayer Map

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