Vom Designer's Commentary
Q: If a rule modifies a model’s Strength characteristic, and that model is equipped with a melee weapon that also has a modifier (e.g. ‘x2’), could you explain the order in which the modifiers are applied to the characteristics and the weapon’s Strength?*
A: First you must determine the model’s current Strength characteristic. To do so apply all modifiers to it that multiply or divide the value, then apply any that add or subtract to it. Having done this, you then modify this value as described by the weapon’s Strength characteristic. For example, let’s imagine a model with a basic Strength characteristic of 3 is under the effects of two psychic powers: a friendly one that doubles their Strength characteristic, and an enemy one that subtracts 1 from their Strength characteristic. That model’s current Strength is therefore 5. If this model then fights with a weapon like a power fist, which has a Strength characteristic of ‘x2’, that attack will therefore be resolved at Strength 10.