The idea behind this this is really neat (having to quickly switch between being able to move and jump), but for me at least it's killed by the jump and switch keys being on opposite sides of the keyboard and how easy it is to get sent back to the previous level. I think if the switch key was space instead and it was easier to tell which parts of the level are dangerous (and potentially have them send you back to the start of that level rather than the one before), it could be really solid!
also first time seeing a game in godot, been meaning to check that engine out