The art is fantastic. And i mean both, graphics and music; from the first second. I also chuckled out loud in some of the dialog, specially with the wife liking spikes so much :D.
It does not feel like it was done in a weekend—so well polished!
I had a bit of problems with the controls, specially with a non-standard keyboard, but i blame it to my terrible two-hand coordination.
The gravity mechanic is also very well thought. Kudos!