I played the Siren as liked her invincible special. Got her right up to the max of level 50. No real tips, you don't level up that must from taking down loads of skags etc in the game but do ALL the side-missions and you will find yourself levelling up very quickly. Big dudes should not be a problem as they are not that tough at all and everything else is free roaming so if you start dying, do a Monty Python and run away, run away and get some health. Siren ability good for this as well as you eventually get recharge your health. Really enjoyed this game, and the DLC Dr Ned Zombies, did not download the latest battle arena one as you could not level up, pointless. Have fun in the depressing distopian future
