For me, the first two were more like puzzles, and the others you actually "play".
Of those, Jenna's and Cai's are actually fun, despite the fact they take so much longer than the others. With Ruari and Marlowe, you literally have to sit there waiting for them to talk their slow-ass mouth off, and then when you do get to actually start playing, it's just kind of a tedious mosh-pit against mostly-helpless enemies who nonetheless spam knockbacks. It's probably the closest experience I'll ever have to playing a fighter game against myself. XD
Also, those goddamn bats.
All-in-all, I like the event, because it's free money, and free exp/ap, and I just started playing so hell yea.