Some early opinions:
The game controls great, even on keyboard, I like that as i dont need to go through the difficulty of installing a controller on Steam.
The game's graphics are pretty good, obviously there is some unfinished stuff but I do belive that the current artsyle is pretty good.
Opportunity for single player content, I think this game would have a good opportunity to include a smash run esc mode, considering that the creators also made super smash flash I am hopeful they will include such a mode.
If my art skills weren't so down the toilet I would be modding the game right now, Fraytools allows great opportunities to add infinite content, I'm excited for any new potential characters and hopefully even bosses they would add.
Overall 8/10, great for such an early state