Last Exit is a Firefight map to be included in Halo 3: ODST. With the map also comes the achievement for scoring 200,000 or more points in Firefight. See Achievement: Last Exit.
Last Exit is a medium, symetrical map with a large roundabout in the middle, upon which stands a small structure. Players spawn inside a small building on one side of the map. This building features only one entrance at the front, as well as health packs and ammunition. Directly outside the spawn building, is a broad set of stairs that lead out to the enemy spawn points. To the left and right of the entrance are elevated positions. The left of these elevated positions contains a sniper rifle, while the right features a rocket launcher.
This map is big enough for the covenant to drop ghosts, mainly on the 2nd wave of each round.