Well, that was morbid. The sound design, the art, the poetic manner in which Satan decrees the sins of the wicked, the fact that you yourself are torturing them... it's all a bit grim. Nicely grim, though! There's an impressive runtime on this one, but I feel like it could do with a bit more variety as far as the gameplay mechanics go. I'm glad I was able to skip to the ending.
Final thought: coal? Come on, Satan. When are you going to invest in renewable energy?