Witcher: The Anti-Chaos-Spawn
 Zealot Build - Warhammer 40k: Darktide 

If you saw the video down below, the player gave me immense inspiration to make a parry build. 

Almost all my game's losses, are mostly due to a specific enemy: Chaos-spawn. They are relentless in their attacks and don't seem to have any weak spots for back-stabbing and ranged damage to kill it effectively.

• Play "Silver for Monsters" when you whip out your sword.
• Pay close attention to a sound notification when you're about to be attacked.
• Spam parry your devil's claw sword on elites such as Ragers, Maulers, or being surrounded by everything. 
• Spam Heavy attacks on hordes.
• Use your pistol(Handheld Crossbow) to pick off those pesky Gunners, Bombers, Flamers, Trappers, Reapers, and Snipers. (Hopefully, your team does that job for you). Or finish off a Mauler/Crusher.
• Go on a suicidal melee tangent whenever a Chaos-spawn, Plague-Orgyn, and Chaos-captain is encountered (Beast of Nurgle is ill-advised as they will eat you if you're not careful, as well as dealing taint damage which isn't nice for a melee oriented build). Try to draw their attention the most, and perform a Sekiro moment against those annoying bosses.

• Side note: You can probably take on a Daemon-host with this setup; just remember attack patterns, and use your Souls experience to help you do the rest.
• Another side note: Trinkets are not tailored for anything specific, but you can try to go for increased stamina, as your parries drain stamina