Try anything - you can't pick your targets, you can't fight more than one level above you, you can practicaly forget about most stuff. The bosses themselves wouldn't be too tough for the select few guys who are complete cheat codes, but getting there would take crazy combinations of skill, luck and prep setups. I never signed up for this. I don't even want to go there.
This should be optional and worked out in some way that doesn't unlock via an easily acessible quest. It's making me want to give up on the game just by being there (Irational, I know, but there you have it).
EDIT: It's not even irrational - seeing that badge in the PQI pool is literally making me regret ever investing any time in this game. I once went berserk in desperate hope that I can persuade you guys to move in a direction that would remove this kind of madness from normal people and potential regular customers, including all the tools a player had to deal with it.
I feel like every hour I spent playing, writing and thinking about this game was the biggest waste of time in my life right now. You couldn't believe how sad I am.