Hi,
I enjoy the game. I especially enjoy the art style and color choices.
On a visual level I was missing something when finishing the level. Some games have a door open/close animation, or the character enters a lift and goes down, or the character at the very least fades out or leaves the screen completely.
As for Game Design :
On level 3, if you jump onto your corpse and die you get body blocked by your second corpse. Alternatively the second body gets pushed into your first body and the physics go all jittery. Maybe corpses could disintegrate if they are pushed into walls or other corpses for several frames in a row to avoid this glitchery? Just a thought, might not work with the game design you have planned...
There's one core design that really annoyed me though. I'm very bad at platformers, and kept jumping onto the small spike platforms by having my character only stand on the platform with a small part of his body. When he then died of spikes, physics kicked in and he tilted over and fell down away from the platform. This felt unrewarding to me, because in my mind I was like "But I got there!", when really, I just sucked at jumping on the center of the spikes.
I know that in other levels you need to die on spikes and then fall AWAY from them. Would it be possible to disable rigidbody rotation while in direct contact with the spikes to avoid my earlier peeve while still allowing the rest of the levels to work.
Having said that, I understand if this is just not what you had in mind for the game, and I'm just too much of a noob to get things right. But emotionally it is the only negative thing that stood out to me while playing it yesterday.
Best regards,
Sven