Congrats and thanks for finally finishing the project. When I hear the BGM I swear to myself I have heard of it somewhere... then the initial screen of a white punchbag(?) on a tree came into view and it finally clicked for me, it's that game I played A LONG while back (and bothered to leave a review! This is something I rarely do.)
Bonus for adding visual hints for the blue orb. though I think the boss fight could use some contrast adjustments as well. If me having done various tunings ended with a gameplay where I could only vaguely see the boss's location when he attacks, it boggles me to think that people can see there're pedestals there at all. (I think I discovered them by accident in the first version. This time I had to consult a video guide...BUT it could also just be my screen issue, so whatever)
Hint for different endings (This is just for reference, I lost my save before I finish all of them because I was in incognito mode, but I think the following is correct)
1.Beat the boss 3 times normally.
2.Beat the boss using orbs. (Notice, you can use them in the battle,)
3.Destroy the black crystal, then visit the boss room. (You need to "try everything you can" to find the crystal)
Again, congrats! Wish you the best of luck in your future works.