Rookie

The USG Ishimura was on a mission toward the colony Aegis VII for a mining operation on their way there they stumbled across a pod that contain a man. This man is known as Rookie and he's not from around this universe.
The rookie finds himself on a ship that is not UNSC sooner or later he will have to fight through terrifying creatures that are created by rock known as the marker.
And the maker wants him.