I'm a player in an Extinction Curse AP campaign, where we are just shy of level 7, having cleared out the first level of a dungeon. So far I'm enjoying it, playing an Animal Instinct (Snake) Barbarian with Wrestler archetype (the strong-girl of the circus, even came up with my own trick where I use Athletics and the barbarian feat Bashing Charge to burst through large walls set up in the circus for entertainment).