great work! I really dig the Zelda awakening vibe! It looks so ambitious! This is really super entertaining and I'll definitely keep an eye on it! I love that you chose not to go for the dungeon theme, which I start to get bored by.
A few bugs here and there but it's pretty solid for a demo (the heart UI got stuck, my character stopped attacking and I had a UE fatal error)
I also love the character switching idea.
I think the light "head" ram punch is a bit slow. I understand why you did that but it gives the feeling the controls aren't responsive. Also, I would speed up the rotation speed just a tiny bit.
The music is so repetitive it got on my nerve at some point but I understand it's just a demo.