I've cleared every mission except for the most recent ones with the last patch on a NAKED monk.

The best advice I can give you, is change your out-look. Don't get mad when the AI is being stupid as balls. Learn to accept what they can and cannot do, and then try to master that broken system. It's amazing what you can accomplish simply by disengaging/engaging them, and forcing them to move and such.

But I can promise you, there's not a single mechanic that's unavoidable that'll one shot you, lol. Playing with gear would certainly be a lot easier. But if you're good at micro-managing them and avoiding absolutely all of the avoidable damage--you'll be good. But if you want an easy time. Just deck your guy out and sit in all the AoE. The healer won't carry you, but they'll get to your wounds -eventually- just be frugal at taking damage. And almost never LB unless you absolutely for sure know you won't die during it.