Thank you so much for the detailed feedback. The initial plan was more bosses and a lot more content to really put that time rewind and overwind abilities to work, especially in combat as it's a core metroidvania element, but I severely underestimated how long it would take to put together the maps even once I had the building blocks.
Good job spotting the cheese strat :). i found it last night while playtesting it on itch with 40 minutes to go. That gap should not have been there.
Glad you liked the music, I'll pass the feedback to my daughter :)