That was really nice. Took me quite some time to get through too but wasn't frustrating at all. The floating mechanic fits the theme very well. I kinda wish there was a clever way to apply the shrinking - maybe enemies shooting at you through a narrow hallway or some puzzles related to weight? Difficult.
I really like the artwork for the doors and statues as well.
Overall a well polished game for the 3 hours of dev time :)