You'll always have health regen, great damage, and be really difficult to put down. Just go for gunzerking as long and frequently as possible. If you take a few skills on the right, the ones for health regen, and then go down the center skill set, you'll be well off. also, a maliwan slag pistol for duel-wielding with the infinity will be very effective as it will increase your damage by 30% with Divergent Likeness, plus aditional damage from the slag effect, too. fire or corrosive, doesn't really matter, but corrosive will work better in general while the fire will be a lot more effective for flesh than armor. Obviously, when you get to around level 72, you should look at further increasing gunzerk with yippee-ki-yay and the cooldown reduction one from shooting enemies, or increase gunning by going with the left side of the gunlust tree and try to get yourself an infinity pistol.
