Search:

Guys with Aimed shot and Horton my crit is at 27%.
Aimshot, Noxious bolt, throw down smoke and machete/crit the boss to death. Rinse and repeat :)

Only downside is if you don't have a good tank...

I've always gone Noxious Bolt because it seems to provide the most DPS.
If you find otherwise I'd like to know ;)

The smoke bomb glitch has been fixed now - it's beneficial to the entire party and I would suggest getting it.
There's no need to get the heal skill when you can just use pots.
My other two are...

I tend to have better luck with Silver Chests as well.

What's annoying is the fact that half of the warriors in the game don't know how to maintain aggro or they don't have their skills set to maintain aggro.