Stay in the Pelican

Staying in the Pelican
Staying in the Pelican can be achieved on the level Assault on the Control Room in Halo: Combat Evolved.

Just after the cinematic ends, you will be dropped of by a Pelican onto a platform where several Covenant enemies are resting. Like in any other level, you will automatically jump off the Pelican when the time comes.

Just after you alight, before you touch the ground, if you press X, you will climb back into the Pelican with the Covenant forces firing at you.

The Pelican will the turn around and head back the path it came from, a large vertical Forerunner tunnel, with you inside it. Since the Pelican is diving downwards, it may make your camera a little disorientated.

You will eventually die when you strike the invisible wall.

If you press X and alight the Pelican while it is diving down at the right time, you may land on several large, floating, spinning beams. You can stay on them as long as you like and admire the architecture around you.