What are the easiest and hardest platformer demons in your opinion, as well as your hardest platformer completions?

Shiftleaf temple is a joke, not demon difficulty with 3 rooms, and only the last one is hard.

Tower XXII is insane, and doesn’t have the multiple patterns and checkpoints other extremes do.

Maximun Security is at best Hard Demon, but it’s still fun and challenging, and definitely my hardest, considering it’s my only Insane Demon, I have no Hard Demons beat, and my hardest before was Flipswap.