I'm surprised at how good the game feels to play. I just have 2 complaints: The last boss's puzzles were annoying, and the Evil Route feels way too Evil.
Surprisingly, I don't have any complaints about defeating Satan. Sure, there's no real reward for it and it's a brutally difficult fight, but it's also really fun and forces you to know what you're doing with the combat system. This was honestly a much better fight than the actual last boss, though I understand why they didn't make the last boss fight like this.
I don't think I can bring myself to replay the game on an evil route, and I'm just going to have to settle with the good endings. It feels legitimately bad betraying everyone for some sex scenes.