While its clearly unfinished and missing some elements (such as music, etc) I can honestly say that I had fun playing this game. I really believe that you've got a great concept here and a really good start of something solid. The idea of a puzzle-platformer where you have to use a variety of potions to navigate or fight your way through enemies is a really strong idea and with more development could lead to something special.
The platforming, aiming and moving around felt really good and natural, and while it did lack feedback it had potential to be really satisfying when you kill enemies.
The main downsides were things that could be fixed with more work. The enemies were too fast and the visuals did need some work. It took me a little while to understand the different potion types, because some of them looked so similar.
All-in-all, a much better game than you seemed to think it was.