I had a lot of trouble figuring out what I needed to do. I made my way through a portal, then realised that collecting enough hearts got me into the next room, but from there I was lost. Notes were flying around, and I couldn't get past the guitar in the middle. At a certain point, it popped up saying to push E to cleanse, but when I did that nothing happened. Then, eventually, it popped up saying game over. I tried a few times to see if I'd missed anything or if I was meant to go through a different portal first.
The graphics were cool, though. I like the little dude, and the backgrounds in the rooms looked great.