Which of these extremes is the hardest once I beat The Ultimate Phase?

So I’m getting pretty close to beating TUP (currently have 68% twice and I have it in 3 runs) and I have 4 other extremes beaten: Acu, Cataclysm, Deception Dive, and NecropoliX. And I was wondering, once I beat this level, will this be my hardest or are one of these levels still harder than TUP?