I go with Alpha Omega
Cons... Melee class, so you have to get close.
This is how you do it.
1. Hit them with a stun "3" (hotkey)
2. Hit them with your double attack "2"
3. Hit them with your crit skill/Bunker Buster "5"
IF THAT DOESN'T kill them.
4. HEAL "2"
5. Stun
6. Double Attack
7. Crit
They should be dead by now.. or you should be dead. wwww