Very enjoyable. Very well done. Hard to suggest any improvements of any importance. It was possible to beat without mutating but that might be intentional. I too probably got a bit far before I realised the there were extra keys/abilities. The pot guy that subtly encourages you to pound is quite far in and I missed him first time though I nearly headed his way but wanted to beat my progress up the tower so I went back to him after finishing. I think my favourite bit is the animation and the general solid environment. Nice shading, lighting and effects.
Viewing post in Atop jam comments
It wasn't intentional, but once I realised you could sequence break, it seemed more fun to reward players for thinking outside the box - that's why one of the NPCs will call you out on it if you get into the tower without the upgraded stomp. I didn't expect so many people to find that route, though, which suggests that I should have made the intended solution more obvious. Thank you for playing!