This Very Difficult Bear - Paragon

I recently decided to try a rolling a paragon for the second time (the first was just after NF came out, and I got so frustrated with the playstyle that I ditched for a Derv).
Played through all three campaigns with no incident (even got to Rank 2 Survivor without even realizing it), until GWEN.

Now I'm trying to get my Norn rank up before playing through the rest of the expansion (so I can show off Norn armor in screenshots), and the Bear Club for Men is pretty much driving me insane.

As have every other solo quest/mission involving my Paragon.

Is there some secret here?
I don't have any problem not-dying, due to shouts.
But I can't do enough damage with spear skills, conditions are pretty much negated with Defy Pain and Troll Unguent, and knockdowns don't actually interrupt anything.

I even spent waaay too much time and platinum reassembling a hammer build that I use on my warrior to try to make use of the Club, but it's doing ZERO damage.

I've never had a problem with any other character in any other profession, but my paragon just seems lost fighting by himself.

Tips are appreciated.

EVAS , spoil victor , pain inverter , interrupt for troll unguent, some degen conditions , self heal?

Spirit Spam.

I suspect the reason you're having trouble (more than you expected, anyway) is because when you did it with your Warrior it was before Defy Pain had the -damage in addition to the other benefits. As Xeno says, spirit spam clears it pretty easily. Shadowsong will throttle it's adrenaline gain so Defy Pain should hopefully not be a factor.