Thanks for the feedback! Tbh I didn’t spend a lot of time thinking about the controller scheme. I only realized much later that I should’ve added E as an action key, and I’m still not sure about space being reserved for item effects.
The puzzles were done in the last minute, so until I have time to implement better ones with more helpful tips and more rewarding gameplay, I’ve added a comment with the solutions on the game page as a workaround.