Thanks so much for the feedback and it's awesome to hear that you like the game! :P
But yeah, as you said it seems the main thing people agree on as an issue is how hard the game is. It seems the main flaw I've gotta work on is balancing the difficulty of the boss fights and provide better context clues on how to beat them. With the whole healing items thing, I'm not sure if I wanna go down that road as a way to make things easier but it is for sure a suggestion I'm gonna keep in mind for the future. XD