X-Men: The Official Game is Activision's tie-in video game to the 2006 film X-Men: The Last Stand. It is mostly a paint-by-numbers X-Men game, which is a good thing.
In this TAS, TehBerral makes extensive use of Nightcrawler's teleport glitch in later stages in order to blaze through the game and defeat Master Mold in record time.
The improvement to the previous run comes from better optimization with said teleport glitch, making the run much more chaotic (and 3 minutes faster).