Forgive the train of thoughts-style writing, I'm typing as I play since I'm sure I'll forget everything otherwise.
I'm unable to swap character models in the menu. Dunno if I'm just retarded (I am retarded), maybe it's just me. That aside, I love the art and graphics. The character art is cute, the environment is pretty. "Boob mode" being optional is pretty cute. I hate titties so having a flatty MC to play as is nice.
My frame rate is really inconsistent. Looking toward the start vs forward through the level causes some pretty huge frame rate discrepancies. Performance is fine though, all things considered , although my PC is pretty modern, so older PCs might have trouble..
The controls are good. The animations are well-done. Currently just screwing around comboing stuff right by the floating tutorial text. The combat is really fun and satisfying. I ran into a bug with one of the axe guys where, after hitting him once, he stopped doing anything. More enemies throughout the level might be nice, but I don't know - having lulls between action is important too.
The level itself feels a bit padded out maybe. Trekking through caves into clearings into caves into clearings into... etc. gets a bit old. The set pieces are pretty though so I don't care much personally. Giving the player something to do during downtime might help a lot. You might consider adding sprinting out of combat for that purpose - even if the speed boost is only minor, I feel like having a button to press that does something fun when you're not in combat may help keep player's minds occupied. Sprinting in particular may also backfire and cause players to become more impatient over time, so I dunno.
The boss fight looks pretty cool, but in the end I wound up just brute forcing her. I initially tried to avoid damage and play it safe, but I wound up dying twice. Third time I brute forced her and got her down.
I know it's really early in development, but I think you've got a nice game on your hands here. These kinds of games are like crack for me, so I'm looking forward to seeing more from you soon. I'll be keeping an eye on this.