I just finished everyone's "Act 2" yesterday.
My main party is Alf (first guy I picked and is level 38 or 39), Cyrus (level 35), Huntress chick (level 33) and Therion (level 35ish)
Only real class I dual as of right now is Therion and he dualclasses a dancer, but I may change that to merchant for the give BP ability. It's more practical to lay waste with Cyrus and his nukes with his ultimate ability.
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"I also advised their executives through e-mail that further behavior could result in a cyber attack[...]"
https://imgur.com/cSxy3Od