Game is quite nice for an alpha, after understanding the yo-yo mechanic(it cost me work) it was quite simple to go through the levels, although I did died a lot and I think it would be better not to go back to the start menu :/
The game is quite interesting, although I think it is somewhat difficult to learn the controls, and as the other comments say it, it is a pity the lack of music and effects, but once you have them, the experience will be better.
I also bugged the game a couple of times but my favorite time was the arm :v , I’ll show you:
Hope to see the full game soon