I appreciate you explaining the exact issues you had with the controls, it helps me to understand the specific section of the controls people are struggling with. Seems to me after the feedback on my game and my own issues with other submission's controls that a lot of the people playing these games are so used to the common controls of WASD for movement, SPACE to jump, etc., that their muscle memory makes it harder to adjust to all these funky control schemes that people come up with for their weird game jam mechanics.
I agree, I wanted to switch to a more exact energy system half way through but ran out of time. The energy system is also completely different inside the Unity editor, I think my mistake was putting the counter in the Update function, because when I played in-engine a perfect level ended with ~10 energy, and in the final build most levels end with ~45 energy even with a bunch of mistakes, making it almost impossible to loose a level because of energy loss.