Without glitches.
Tricks
Portals can be entered one frame faster with the correct aim angle.
Being in mid-air when exiting a level and entering a portal the player will warp to the portal position from the old level in the new level
Other comments
arandomgameTASer's run is fast, Arcree2's run is faster, but mine is fastest.
Noxxa: This homebrew skirts the line of notability, but I can see enough external references of it floating around on the internet, so I'll give it a pass.
While voting results were decent, the very brief and scarcely comprehensible nature of the run make it hard for me to see the run as faring up well enough for the sort of entertainment level that a Moons TAS should be at. So, I will accept this movie for the Vault. If post-publication ratings prove me wrong though, I'll update the tier for this run accordingly.
Fog: Processing.