I love the looks of it, and the soundtrack is great.
But after finishing the first level, the background went black and I couldn’t figure out how to start the next.
When you beat a level, the menu pops up and hides the fact that I am unloading the last level and loading a new one in. It is possible that something in the loading process didn't complete and left you falling in the void. Sorry about that. Thanks for checking it out!
