This glitch occurs on the Halo: Combat Evolved level, Halo.
At the part where you need to press the switch to activate the 'light bridge'. it is possible to skip the clip. This is how:
- Look down
- Break the glass underneath you.
- Plant a Grenade (Preferably a Plasma Grenade).
- Press X to start the cut-scene.
- Instead of the cut-scene starting, you will be free to move.
- If a Marine is still in combat or shooting whether with his AR or the LAAG.
Another area is in Halo 3 on the level The Covenant at the citadel where you must activate a bridge to start a cut-scene with the Arbiter killing the prophet of Truth. though the cut-scene still happens, you can get over to the area without activating the light bridge.
- Get to the switch
- Plant a Grenade (Preferably Plasma)
- Run forward
If done correctly, you crossed it without using the bridge.