Sorry for those who find it difficult to play. I forgot to add the list of controls and a tutorial so, yeah. I will try to fix all the bugs that you've encountered and release it soon...(I dunno If anyone would still play it, but I'm going to do it anyways).
The game does in fact have a reset button, it's shift+r. You could also quit by pressing esc. When on the other side, you should press down to jump instead of up.
This is my very first game and my very first jam. Thank you all for the feedback. I'm really glad that you've all liked it.