The controls (of the character) are visible on screen at all times ;) But yeah, we didn’t have the time to include any notes on how to actually do the remapping in-game.
If you’d like to have another go (or for anyone else’s reference):
There are keyboard keys to the left and right of the screen, and actions in the center. The lines between them represent which key is mapped to which action at any time. You can click on key and action to create a new mapping (order does not matter)
Enemies damage your controls rather than your health directly. We…. don’t have an explicit lose state, but eventually you can no longer control the character.