About the Game(s):
Action 52 is an unlicensed game made for the NES and Sega Genesis, featuring - you guessed it - 52 different video games. The NES version was published in 1991, whereas the Genesis version was published in 1993. Both versions were published by Active Enterprises.
Fire Breathers is game 1/52 in the NES version of Action 52. You play as the red Fire Breather who has to defeat the blue Fire Breather 8 times.
About the TAS:
All 26 frames of the improvement is in the last level. It turns out the developers didn't code the X and Y positions correctly, so instead of going past the wall, we can just warp to the left of the screen and come out the other end.
This strategy was used in
ShesChardore's RTA WR. Thanks to
Walgrey for pointing it out to me on Discord, and thank
you for reading.