P. Atk. = (weapon + enchant) × STR × (level + 89) / 100 × buffs × masteries + passive bonuses. C1 formulas checked on the Legacy OBT: C1 STR curve, flat Weapon Mastery (no multiplier), damage constant 70. Soulshots boost auto-attacks only, magic can't crit, spiritshots cast 40% faster. Armor is not modelled except its flat Max MP bonus.