Nice game! The character design felt inspired by Mind over Magnet. Here are some pieces of feedback: Maybe don't make the narrator so condescending. It feels kind of unnecessary and out of place from the rest of the game. Also, maybe make the R key restart, so I don't have to from using wasd + space to pressing escape, then grabbing my mouse to click the restart button. Finally a small thing is that in the first screenshot you call it a Metroidbrania. It is definitely not a Metroidbrania as you can't go back to previous rooms and there are no upgrades. Rather it is a puzzle platformer.
Also I found a bug with your buffer time implementation; if you press jump twice quickly, you can double jump.
Don't take all of this to mean I didn't like your game lol. I did really like it which is why I spent 15 minutes writing this comment!