Thank you for this feedback !
I personally tested all the levels ( used to the speedrun style ), and then I had my wife give it a try, even though she's not into this kind of game, but she managed to get through most of the levels ( except for the really tough ones at the end ).
I'm not sure about the infinite loop you mentioned. Could you please explain the issue you're facing a bit more ?
PS : I spent around 2 days creating the game, another 2 on menus to work also on keyboard, and the remaining 3 fixing all the bugs caused by various small details and I don't recall encountering an infinite loop...