Headless Master Chief
From Halopedia, the Halo wiki
The Headless Master Chief glitch can be done on the Halo: Combat Evolved level The Pillar of Autumn. This strange glitch can be performed at the very beginning.
- Wait until you step out of the Cryo Tube.
- A split second after you come out, jump back inside the cryo tube.
You will be pushed out but if you look inside the tube from a certain angle, you will see a headless Master Chief. Also, if you jump on the cryo tube, you might fall into the small space behind the cryo tube.
