Kicks are your friends, you get a few and they will provide you with a bunch of damage.
You cant use punch attacks with weapons, but you can melee pretty good with out weapons equiped, but lose out on stats, so it is your choice.
Primary power pool is dex, secondary is sta. I would put the stats in order of Dex, str, sta, and then agi, but then again you need to find the balance to suit your play style.
Dont go all out on the mob, let the tank get aggro and maintain aggro, and it will be easier if you do your big damage attacks at the end.
You also may want to keep a self heal or 2 up for emergancies.