What is your Dexterity? The max chance to hit is determined by Dexterity. Perception is used to reduce the range penalty of a ranged shot, but it cannot do more than reduce it completely, in which case the Dexterity is the deciding factor. Also, there is a large penalty of fighting someone above your level. Still your numbers don't look so good...
It's also 12. I've put one point into Constitution +2 from gear, 2 into perception +4 and 3 in dexterity +2.
BTW: I've tried to do the fight that happens after you pick up the blood vial. Over after one(!) round. All my characters were either stunned or frozen. No fun won't buy again.
