Everyone's Mortal But Me is one of the thirteen network levels in Marathon 2: Durandal.
The map is based on a large tower with lifts leading from the ground floor to the top. In addition, there are teleporters that lead you to tunnels raised several feet above the "hill." It is possible to reach the hill from these sections by rocket jumping.
Marathon 2: Durandal - Network Level: Everyone's Mortal But Me
If you teleport on one of the jump pads, you can open a secret door in the wall to reveal some ammunition and a Super Shield power up. This is a great place to hide out and ambush other players.