Stacking
In Warhammer 40,000: Darktide, stacking generally refers to multiple instances of a specific buff or effect applying to your character, a weapon, or enemies, which can work in several ways:
Additive Stacks
(e.g., certain stat increases like Health): Multiple instances of the same perk or talent are added together, but often with diminishing returns after a certain point.
(e.g., Damage Resistance from different sources): Bonuses from separate effects (like auras, feats, and curios) are applied to each other in sequence, creating a more powerful combined effect.
Buff Timer Stacking
(e.g., Disrupt Destiny): Each application of the buff refreshes the timer for the entire stack, making it easier to maintain.
Stacking with Limits
(e.g., Soulblaze): Some abilities have a maximum number of stacks they can apply, and applying more does not provide further benefits.
Here's a breakdown of common stacking mechanics:
Stacking Mechanics Explained
Additive Stacking & Diminishing Returns:
How it works: When you have multiple perks or talents that grant the same stat (e.g., +20% Max Health), the bonuses are added together, usually with diminishing returns to prevent overly powerful combinations.
Example: Three +20% Max Health curios might give you about 45-50% more health, not 60%.
When it applies: Most stat boosts from multiple sources like curio perks and certain talent nodes are additive.
Multiplicative Stacking:
How it works: Bonuses from different sources are applied to one another in sequence. This is often the case for damage reduction from separate sources like talents, auras, and keystone talents.
Example: A 20% damage resistance from a curio and a 20% damage resistance from a talent can be more powerful than two additive 20% bonuses.
Buff Timer Stacking:
How it works: When a stack is refreshed by a new application, the entire timer for the stack is reset.
Example: Abilities like Disrupt Destiny work this way; hitting a marked elite enemy and gaining a stack refreshes the timer for all your current stacks.
Limited Stacks:
How it works: Some abilities, like Soulblaze, have a maximum stack cap.
Example: If you reach the 4-stack limit for Soulblaze, applying more stacks won't provide further damage.
Key Takeaways
Auras Don't Stack (Mostly): Generally, multiple auras of the same type do not stack to provide a greater bonus; only the strongest aura applies.
Curio Perks can Stack: Curios, which are item slots, can have perks that stack. For instance, multiple instances of the same perk on different curios can increase the bonus you receive.
Blessed Weapons: Weapon blessings can stack with themselves and other effects.