Originally Posted by
TheMightyMollusk
Ultima's worst mechanic is the "maze" segment where you have to dodge AoEs, moving adds dropping more AoEs, and still make it back into her hitbox before the moving wall of doom reaches you. Oh, and until you're back up close, you're pacified and can't cast anything, not even defensive skills or sprint. It's annoying and breaks the flow of the fight.
Otherwise there's just a crapload of AoEs everywhere, and catching the divebomb adds for a damage buff. It's not too difficult, it's just constant.