Hm. Don't see the problem with Cerberus. And I'm not saying this as if I'm any good at hunting games (or above average in most games). Died the first time and now I keep beating him either with random online people or AI allies. Also, the allies don't seem that dumb to me. Sure, they ain't great, but far from infuriating. I can count on them more on reviving me than actual players.
(though I need to mention that I have maxed my character's level -9 health, 11 spells/power I think- and have several level three spells. I've only fused one spell and it's quite weak at the moment)