Difficulty: fairly easy
I had three hours left at the end of a night, and I decided to use them to speed-map a Mario level. Two hours later, I had this. It’s fairly simple and straightforward as a result, but still a fun quick romp.
The theme is fairly shallow: there’s a “heaven” overworld and a “hell” subworld, and you shift back and forth a couple times on your way through the level.
I watched someone try to speedrun it shortly after I uploaded it, and I was delighted to see that they managed to skip the hell area entirely. Seems appropriate.