Nicely executed mini-metroidvania for 48h! Some of the enemies did feel unfair at times, but gameplay is hard to get balanced just right in only a couple days. The twist was quite unexpected and worth playing to the end for. Nice job on the sprites too. Those animations are great!
Edit: Just a thought, you could add a [Spoilers ahead!] warning to your theme description for those who read it before playing to the end.