I agree, good platformer with good use of the theme.
I have a minor issue with the wall jumps, but I suppose that’s down to personal preference: I’m used to pointing my arrow keys against the wall to hold on, then pressing the jump button to push away from it. I’ve probably picked that habit up in Super Meat Boy… Here, though, you stick to the walls automatically and have to point in the direction you want to jump towards. This makes it somewhat unintuitive to do the wall jumps.
Aside from that, quite fun.