The art that's there is great and clean, and is pretty well designed. And I agree with others that once the main character is in place it'll feel much better, because playing as a cube doesn't feel so good. Also I couldn't find a controls layout for keyboard, but that's not a big deal, I kind of bluffed my way through it. Combat feels good and snappy, but I just wish there was more!

Kinda wish there was some sort of notification when you beat the demo, cus I wondered around for a couple minutes trying to figure out what to do. And then when I entered the two balls room again the green tree door thing appeared again and I couldn't get out.

But great work, I enjoyed playing it. Keep it up!

Haves potential, a quick tweak i would suggest would be making the camera fov slightly higher
enemy's don't really encourage you to do other moves that aren't just the 3 hit combo on the ground, with a bit of polish this could be quite fun tho.

This is a pretty good start to what can be a lot more fun.  I feel once you have a real character model it'll be easier to get a feel for it, but make things a bit snappier for a better feel.  I also feel the dash should be longer, maybe even by double.  The most satisfying move for me is the charged sword-dash attack.  Keep up the good work!