This is a tool-assisted speedrun. For more information, see http://tasvideos.org/4363M.html. TAS originally published on 2020-12-26.
The guy who has infinite supply of ammo and destroys worlds bare-chested is back again! And this time he has a shirt and a friend with him.
This very colorful movie by Mr_K and EZGames69 (http://tasvideos.org/EZGames69.html) plays through the game with both characters at the same time (which is far from trivial to do), and 26.28 seconds faster than the previous run (http://tasvideos.org/787M.html), thanks to better optimisation.
For a movie that completes the game even faster using a warping glitch, see this run (http://tasvideos.org/1299M.html).