Gotten to 60, playing through inferno and I've given up somewhat. I've stacked damage (up to 42k dps atm) at the expense of vitality (27k) and I've chosen grenadier as one of my passive skills. I heartily spam high damage skills (on that front spike trap with the scatter skill is a ripper for some quick burst) until I'm near death and then I do my best to die next to what I'm trying to kill. Corpse run and do it over again. Couple deaths kills damn near anything.
I've also noticed it's had the added benefit that when you don't really care if you're going to die I seem to get some serious damage in before I go down - none of that time wasted running around trying to outsurvive them, you're just trying stay up as long as you can to do as much hurt as you possibly can, death is inevitable and also beneficial.
Edit, current build is this. Still searching for the perfect primary attack but Marius's suggestion isn't half bad atm. Seriously considering swapping it to some form of entangling shot and relying more heavily on spike traps for damage, they're so much fun to use I sometimes forget I have elemental arrows.


