Instructions
Load Forge Mode by selecting it from the "Halo: Reach" main menu. Select "Forge World" and set your map to "Forge World."
Run to the rear right corner of the hangar in which you spawn.
Add a respawn point directly under your location. You can open the objects menu by pressing "B."
Spawn a new grid after your respawn point is placed and rotate it so it is perpendicular to the ceiling.
Back into the corner and then flip the grid into your body by holding the right trigger and pressing down on the right control stick.
Stop flipping the grid as soon as you die, then end the round when you respawn.
Open "Theater mode" and watch the video of your Forge build. When your character dies, hit the "Y" button twice and fly directly backwards. This will launch you out of the map, without the countdown timer.