Every char starts with 20 HP (Without the Vitality bonus)
There's a roll for the hit, after that a roll for damage, the damage roll gets a bonus for strengh, if a critical hit is landed the damage will suffer a +2, to dodge the attacks is needed the sneak, and you can call the awarness the "Accuracy" of this game, if the defensor haves higher sneak than the attacker's awareness the defensor will dodge the attack.
That's what u made it to understand...