Halo 2 Multiplayer Map Pack Xbox Cheats

Hidden Message On Backwash:
If you jump up on the blue base and sword cancel numerous times, you can get behind the invisible wall. If you walk forward and then follow the end of the ground all the way around you will see the message written in red. The message says "Its looking a little rough out here". There is also another spot on the ground, to the left that the word "Here" appears.