The only thing I can suggest is to be very careful about how you hit mobs and how avoidance works. In Dust's system we had to constantly tinker with avoidance since it seemed a little one sided to have people getting hit all the time. I'm not smart enough personally to tell if you've worked that out or not, personally. I'm no great number cruncher. :)
Assuming we're using the 2d6 system, this reference sheet will give you a basic outline of the expected hit percentage. Adding bonuses will change the success rate and minimum score.