I think all of the Easter Eggs/Glitches in the level The Pillar of Autumn.

0:00 - Cryotube Glitch.
0:37 - Trollface Easter Egg.
1:14 - Three Weapon Glitch.
2:14 - Airlock Door Glitch.

The Master Chief Collection - Halo Combat Evolved Anniversary
Level: The Pillar of Autumn
Difficulty: Any

Made in: Mar 8, 2015

Made and played by:
JIGgameoverSAW