Jesus christ, I was not expecting that ending. The first time I played level 3 I jumped too far and missed the platform and just kept falling forever. Luckily, you piqued my interest, so I started the game over and landed on it the second time because, my god, what a crazy ending.
At first I was like "wow, this is pretty ametuerish. Your ghost character even falls over instead of standing upright", but it really lured me into a false sense of security. Did not expect all the craziness.
I loved all the little easter eggs along the way like the hand coming out of the grave and the Ghaster characters. Seriously well done. I enjoyed this quite a bit.