Flexible Damnation Axe & Bolt
 Zealot Build - Warhammer 40k: Darktide 

Primarily a melee build, focuses on frequent critical hits and mobility to quickly dispatch most specials and Elites on damnation along with any other scabs or dregs along the way. Kills a useful amount of horde zombies although crowd clearing  isn't it's strong suit. 

The use of Shred, Brutal Momentum, and Blood Letting along with the move set and damage of Antax Mk V provide frequently crits particularly when fighting multiple enemies. This is what allows fairly frequent use of Chastise the Wicked with Invocation of Death. DPS of the Antax MK V also allows you to quickly dispatch most elites and specials in a few swings with the exception of carapace armored enemies. Chastise the Wicked also useful for closing distance to more tightly packed groups of shooters that haven't deployed yet (not behind cover and spread out). 

Bolter by itself is easily able address deployed ranged units in single fire with it's ability to pen cover as well as skittish Elites/Specials such as snipers and bombers. Pinning fire and Shattering Impact specifically chosen to deal with Ogryn trains (4+ Crushers, bulwarks) that can be a struggle to deal with on damnation. 

User must be very competent in melee regarding frequent use of dodges and slides. Being able to avoid damage, brief stuns from heavy enemy attacks, and attacks from disablers such as trappers or dogs while fighting multiple enemies is required. Adjusting quickly and making good judgements regarding ranged units you encounter are also required for success. 

Holy Revenant should be used purposely when low on health by allowing yourself to get hit when fighting a large number of melee units that you can then clean up with your axe while "Until Death" activates. Build is high risk/reward and health will frequently be depleted so managing this is essential.