Found out there was a bug with displaying the correct keyboard buttons in the menu, so if the game was confusing because of that, sorry about that. It should be fixed now. But there's a few other improvements as well:

* Apparently, the fullscreen button itch provides causes the game to pause and you can't focus back into the game anymore. This is actually a known issue in Godot and will be fixed in 3.4.1. Meanwhile, I've had to use a workaround to make this work while waiting for 3.4.1, so you should now be able to use it.

* A few people told me they found the key hints too small to read, particularly the keyboard buttons. I've bumped up the font sizes for those; I hope it's easier to read. If not...

* I think some people wanted to use fullscreen because of the previous problem, but that didn't cause the game to scale up because it didn't look very nice and I used pixel scaling so that the game would scale x1, x2 and so on. I found a nicer way to scale the graphics so that it doesn't look pixelly. Godot doesn't give me nice scaling options that allows me to scale the fonts up while leaving the viewport alone, so I've unfortunately had to make this compromise where the font scaling isn't as nice, but it's better than pixel scaling, and doesn't look too bad when scaled up.

* The friction from jumping has been increased so you won't be sliding around as much. If you had this problem with the game previously, you can try it again; hopefully it will be more playable, but it would have been nice if people were more specific about why they couldn't make the jumps if this was your problem with it.