I may be really slow (see what I did there)... but I couldn't figure out how to speed up or if there are other control mechanisms that I'm not aware of. I think it would be helpful to include this information in the game description or somewhere on the screen so the player can experiment without feeling like they're missing something obvious. I tried double-tapping, jumping, running, etc. but I was painfully aware that I was missing something in the range of possible movement options, so I couldn't really make any progress. As someone else mentioned, it might also be worth creating some variations for the sound effects since you hear them quite a lot, especially when you don't know what you're doing, but on the other hand, I had a hard time understanding the basics, so this is a small suggestion. I would also consider making the game start out more linear and build up the challenge as you go along if you want to let the player understand how they're supposed to try to control themselves and solve the puzzles, most of the time I just jumped into the void and waited to respawn lol. If you want to write me spoilers about using the keys, I'd be happy to try the game again.

I couldn't figured the first level, I know there's platform by jumping backward, but its kind of hard to reach the platform below. I was hoping there could be more hint how to reach the next platform.

Fun game, my only real advice would to be to pitch shift the sound effects each time they're played so its not as repetitive. Good job!

Game looked good, but looking around felt bugged. I found WASD to work, but it was chaotic, I attempted to look down at my feet, but I’m not even sure if moving the mouse is the right control to do that because I was not able to. I ended up tumbling into a black oblivion. Which was a pity, as the platforms looked inviting.