Leodes' Murder Spree
This build is by far not the best, but its the one I most enjoy. You use broom buster and scatter sweep to deal with groups and then ice needle to deal with bosses. For ascension points: the first column is hero damage; the second column is ice needle ability power, the third is crit chance > mana > crit damage > freeze > speed > broom nado. I run with 1 armor piece as warrior and the rest warlock. If that makes you uncomfortable, you can do warlock armor and a warrior gun, or keep replacing armor pieces until you feel fine. I am really like double tap for my play style. The 2/s attack speed means that you get nearly all the mana needed for ice needle before it comes off cooldown. For mods I am going with critical, critical damage, and controller on the weapon. Then on armor I am going AP, Healthy AP, and Manaburn AP.
Another thing you could do with the build is to go full Warlocks and put on the increase health mod on a few pieces. This is a bit harder to do since you have to find the mods, so I just replaced the armor.