Corner Elevator
From Halopedia, the Halo wiki
The Corner Elevator glitch is a form of the Butterfly Glitch that can be performed in Halo 3:ODST's Firefight or Campaign levels.
Instructions
To perform simply have 2 players go into a 90 degrees corner then have one player face directly into the corner and one player on top of the another still facing the corner. Next have both players walk into the corner while the bottom player rapidly taps the A button as fast as he can. This will cause the players to rise like an elevator and allows the top player to get out of the map. When done in campaign the player who does not reach the top may commit suicide to be with the player out of the level.
Notes
- This trick can be used to get over energy barriers blocking players from getting to other parts of a level
- This cannot be used to get ahead in campaign because the next item in the storyline doesn't load until the previous one has been inspected.