I was able to do Temple of the Jade Serpent. Bronze though. I'll get silver one of these days.

How? Lots of repetition. You can reset as many times as you like it seems. I didn't hit a limit. CC is a major thing. My hunters drop traps alllll the time. Also bleeding the dps is a pretty big deal.

Jade Serpent is one of the simple ones. I'd try there if you haven't... Scarlet is a sonovabitch.