Roaming spectator
From Halopedia, the Halo wiki
Getting the Spectator out of Map
This is a trick used to freely roam a map by getting the Spectator camera out of the map through theater.
How To Perform
To Get the camera out of the map you must simply get your character near the top of a barrier then end the game. Next go into Theater and load that game. Play it through until your character gets to the part near the barrier. When he is near the top move the camera into 3rd person pivot (where the camera pivots around your character). The move the camera on the other side of the barrier where the camera would physically be behing the barrier then press Y to deattach camera then free roam.
Notes
- Using the Brute Jumping Glitch could help in some areas as to getting near the top of the barrier.
- This happens because the game has no push barriers outside the map
- It is rumored that the Firefight levels are the same as the campaign levels just blocked off