Wow... Just Wow... What masterpiece it have playied...
One tip though: add a button to restart the level (since "R" isn'r really an option... "Shift"? "Control"? maybe even "Alt" if your crazy enough...) and, if there isn't already (i didn't test it so i dunno), let the player pause and/or go to the menù with "Esc"
Edit: Ok, another crazy idea, if your going to add an "in-game menù" like i suggested above, you could let the player navigate the menù with the same controls as those in the game... (Ok, maybe this is a little too crazy... 😅)