The Chronicles of Riddick: Assault on Dark Athena

This achievement is for the Dark Athena campaign.

First off, you must complete the following achievement in the same game.

If you do not complete the mission related to the above achievement then the door to the room that contains the sniper rifle will not be open.

Once, you've completed that quest, continue through the next village area, the arena, and the final village area and enter the refinery area. You'll start this area in a short tube like structure. Just to the right will be an open door with a lot of visible electronics. In side this room, the sniper rifle will be sitting on a counter next to the view screens. Pick it up and your achievement will unlock. If you went down the service elevator, then you've gone too far.