Play>Through-(Xbox MCC) Halo 2: Part 12 /High Charity.

High Charity is the last level in Halo 2 in which Grunts are encountered as enemies. This level was supposed to have a Warthog run where John-117 escapes from High Charity. Using modding, or Glitches, the player can still access the area. A Halo user called Black Diamond restored it by putting in scripts and spawns.