Single-segment speedrun of the Truth and Reconciliation level (level 3) of Halo, performed on Legendary Difficulty. The biggest time savings came by grenade-jumping past the second floor; the trigger that causes the final cutscene to kick in is the death of all enemies on the third floor, but if you skip the enemy GENERATION step, the cutscene happens immediately.  The run (by Cody Miller) was the level winner in a speedrun contest held at halo.bungie.org in the summer of 2004.