So to start out, I love the art, the music, the action and the over the top nature of the whole thing. It feels like, once it's polished, it's gonna be a tight, fast, chaotic and downright fun time. There are quite a few issues as it is right now though.
I understand this is an early access/demo/pre alpha build so non of this is criticism, just feedback.
First off, the balance seems like it's all over the place, on normal there were very few times where the combat felt challenging due to the enormous arsenal (which I think is likely just to show them all off in the demo) and the final boss was a huuuuge spike in difficulty.
Second is the feel. The game appears to want some really tight platforming with the moving elevators and cliffs and all that, but the characters feel extremely floaty and like they have a little too much momentum. The combo made for some situations where I felt like I'd just keep sliding off an edge after I had ceased input. The ninja class was a lot worse in those aspects due to her extreme mobility, but she was still damn fun to play.
Third is level design, I, again, get that this is a demo, but no part of it made me think this was a metroidvania, there seemed to be a few alternate paths but there were no ability unlocks that allowed for access to new areas connecting to old ones.
Lastly, the classes. I really like them. They feel unique and suit differing playstyles. My issues arise from balancing a nonlinear game with multiple classes, especially ones with different movement abilities. The heavy class felt more fun to play overall because blowing sh*t up with big guns is awesome, but the ninja felt like I could just walk past the whole level with my dash since it seems like killing enemies isn't mandatory.
I'm sore there's more I could say, and more that I did say in the video, but don't let this make you think I disliked the game. I had a blast! But most of the praise is reserved for the video. I hope you enjoy.