The mechanic of sacrificing things, as well as the wide selection of different things with various debuffs is amazing. Mechanically it gives the game a ton of variety and would work extremely well with a rougelike in mind.
That being said, i feel that the game lacks some polish in places. As mentioned by Mr. Pdf, the gravity makes it a bit scary to jump, I actually sacrificed one of my legs and that kinda fixed the problem by decreasing the jump height.
Still, it's just a matter of small tweaks, the game is still really well made and i enjoyed finding all the different debuffs and testing them.