Shade's attacks are nonlethal, he's trying to get a sneak attack by slipping into the shadows and attacking while invisible, and he's using all out attack for five points, and he has precise shotx2 so there isn't any penalty for shooting into melee. Damage is a base DC 21, +4 if sneak attack is factored in, with an additional +1/2 points the attack roll exceeds the targets defense for autofire.