Damage

Generally speaking, damage is the amount of hitpoints inflicted upon a target by an object. Mostly we are concerned with damage inflicted by objects wielded by the player character, but of equal consideration is the damaged received by the player character from object wielded by opponents. This damage amount can range from 0 to the amount of vitality a target has remaining in The Witcher.

The player, as Geralt, can inflict damage only by the use of weapons, such as a steel sword, a silver sword or miscellaneous weapons.

Damage boosters

 * Fast Silver
 * Fast Steel
 * Group Silver
 * Group Steel
 * Igni
 * Quen
 * Strong Silver
 * Strong Steel
 * Red meteorite ore
 * Strength
 * Yellow meteorite ore
 * Yrden

Stacking of Damage
Damage in The Witcher stacks by multiplication. This is best explained with the use of examples.

Case 1:
 * Geralt wields a steel sword which boasts + 50% damage.
 * He then applies a whetstone (+ 10% damage) to it.
 * The amount of damage he will do then is:
 * (base damage) * 1.5 (Weapon damage bonus) * 1.1 (whetstone) = (base damage) * 1.65

Case 2:
 * Geralt wields a steel sword which boasts + 50% damage.
 * He then applies necrophage oil (+ 100% damage vs necrophages) to it.
 * The amount of damage he will do against necrophages then is:
 * (base damage) * 1.5 (Weapon damage bonus) * 2 (necrophage oil) = (base damage) * 3

Source

 * DanDraver from CD Project RED

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