Toughness is not a second health bar. It regenerates, health mostly does not, and understanding that gap is most of what separates a Damnation player from someone stuck on Heresy.
Toughness absorbs the large majority of ranged damage and a share of melee. It comes back when you kill things in melee and when you stand near your team. Health comes back from medicae stations and coherency perks, and otherwise it is gone for the mission.
So every build question in Darktide reduces to the same thing: how are you getting toughness back?
Coherency is a mechanic, not a suggestion
Standing within range of teammates regenerates toughness passively. Leaving the group turns it off.
This is why the lone Veteran picking off gunners from a corridor away dies to the first trapper that finds him, and why the four-stack that moves as a block clears Auric missions without a downed player. The game is balanced around coherency being on.
Talent nodes that boost coherency radius or the regeneration rate are quietly among the strongest in every tree.
The four classes, honestly
Veteran is ranged damage and ammo sustain. Marksman's Focus rewards precision kills with stacking bonuses, and the Veteran's ability to hand out ammo makes the whole team's loadouts viable. The most straightforwardly useful class in a random group.
Zealot is melee that gets stronger as it takes damage. Fury of the Faithful and the dash abilities let it reach backline enemies nobody else can touch. High skill floor to survive, very high ceiling.
Psyker is crowd control and single-target deletion. Brain Burst removes a specialist from existence. Warp Charges build power and, if you let peril run too high, kill you. The class most dependent on knowing exactly which enemy to delete.
Ogryn is the wall. Enormous toughness and health, crowd control through sheer mass, and Feel No Pain keeping it standing through hits that flatten anyone else. Weak against range, essential against hordes.
Weapons: blessings matter more than the base item
Two of the same weapon can differ enormously. The base stats set the ceiling, but blessings decide how the weapon plays.
Blessings come in tiers and you can consecrate a weapon to add them, then re-bless to reroll. The practical route is to find a weapon with good base stats in the slots that matter, then invest currency in blessings rather than hunting for a perfect drop that will not come.
For melee, blessings that stack damage on repeated hits or reward specific attack types are worth more than flat damage. For ranged, anything restoring ammo or rewarding weakspot hits.
Note what the weapon's stat bars actually control before spending. Mobility on a heavy melee weapon is nearly meaningless, while the same points in damage are not.
Curios are three free stat slots people waste
You get three curio slots. Each carries a stat and up to three blessings.
The default advice is to stack maximum health or toughness, and that is fine. The better advice is to stack corruption resistance for missions with grimoires, and specific resistances for the mission modifiers you are running into.
Wounds are the stat that matters most in high difficulties. An extra wound is an extra time you can be downed and revived before the run ends.
Do not run curios with no blessings because the base stat is higher. Three small blessings beat one larger number.
Auric missions change the maths
Auric difficulty stacks Damnation intensity with modifiers, and the enemy density means toughness regeneration through kills becomes unreliable. There are simply more things shooting you than you can melee.
Builds that work on Heresy and fail here are usually builds that assumed melee kills would keep toughness topped up. In Auric, coherency and passive regeneration carry more of the load, and the team that stays tight survives.
Maelstrom variants add further modifiers, and a build that ignores them will find out which one it ignored.
The Darktide beginner's guide is the better starting point if you are still learning the enemy roster.
