Yeah, you're right.
The first few floors (mini knights, spiders, zakhan, nergal) stayed the same.
I can't remember all of the floors, but:
- there only are 2 big knights, with a few mini knights (that boss from 2-9, if you know what I mean~~)
- only 1 helios, with 4 big ice spirits
- 1 kanhel + 4 big eyes
- 1 daru + 4 mobs (can't remember which)
- at boss floor, the dragons got replaced with 'dark minions' (only 2 though)
Also that room with those two big red monsters (yeah I'm bad with names) stayed the same too.
I'm missing a few, but that's all I can remember right now ._.
I don't know if I should consider it as nerf since the additional mobs can be annoying at times, but the helios room definetly got easier.