I'm a hardcore gamer (player of SuperMeatBoy, SEUM, Give up) but I find your game pretty hard (even if I finished it). The level design is still very good. A music would be good.
I just realized in watching the video that we can grab the enemies, it is surely easier with this info.

The wall jump and the grab mechanics are well done. Good Job !

Ambitious project! Turned out pretty well too. I enjoy the art and the block grab mechanic!

The grab with the wall jump is pretty hard sometimes! Good job! o/

Those animations are pretty spot on, I quite enjoyed hurling blocks at my foes! Great job!

Fun game. 

The boll which picks up a squirrel and trows it to the wall? Please add some BLOOD FOR FLUFFY SQUIRREL MASSACRE!

The animations are great! Consider adding a gentle squish-bounce while the slime is just walking left/right -- it'll make it feel much more alive.

Despite having no audio, it had some nice animations and and a good story.