Heresy Begets Heresy
 Zealot Build - Warhammer 40k: Darktide 

This build is blessing dependent and does not function well without at least the first tier of lacerate. Do not use this as your buildup guide unless you have Lacerate.
Heavy Attack into Shove Attack is incredibly lethal against human sized specials if you can aim for weak spots. 
You can Sprint and Slide to keep your stamina up, and Sprint while Heavy Attacking to speed at targets. Combo this with sliding to travel long distances very efficiently, and make yourself elusive to ranged fire if you run at an angle and between cover.
You generally want more damage for your weapon perks, such as bonus damage to elites as damage modifiers apply to your bleed/burn damage as well, and you can pick any kind of enemy you feel you are struggling to bleed out. Attack Speed seems incredibly rare, or may only show up on certain weapons.
Frequently dodge left to right and use block-shove-attack, especially when engaging elites in melee. 
Default to your flamer when dealing with overwhelming numbers of enemies. Tap primary fire or your special flamer-bonk to give yourself space before bathing heretics in the Emperor's Light.
Although it is funny to kill bulwarks by light attacking their shields, you can dodge left of their attacks and get extra damage in.

Combos and Specials:
Initiation: Sprint/Slide→Heavy Charge→Ult→Heavy Release→Shove Attack→Light Chain
Horde: Light Attack Chain→Shove Attack→Light Attack Chain
Bulwarks: Light Attack Chain→Enemy Attack Animation Near End→Dodge Left→Shove Attack→ Light Chain
Crushers/Maulers: Light Attack Chain→Prefer Dodging to the right→Ult→Shove-Attack Weak Spot Spam
Maniacs/Mutants: Ult→Heavy Attack→Shove Attack→Light Attack (Weak Spot Preferred) 
Specialists: Prioritize Dodging→Sprint at an angle to close gap→Heavy Charge to Chase → Ult → One Shot Heavy
Hounds: Ult→Heavy Weak Spot→Light Chain or Sprint→Heavy Attack (Before Pounce)