Mister E's Melee Invalidate the Game build
 Ogryn Build - Warhammer 40k: Darktide 

Havoc 40 meta Ogryn from Mister E. 

Focuses on melee, specifically taunting enemies to provide CC and begin your combo of taunt to draw aggro, start swinging to build stagger on little trash mobs and bleed and stagger on heavier opponents, pull out rumbler and shoot at ground to stagger trash mobs and large opponents, start swinging, until next Taunt, etc etc.

This combo is easily capable of invalidating large portions of the game, take all aggro during hordes, and make protective plays on allies. Anything not killed in 1-2 swings by the Power Maul can be given a charged heavy swing to almost certainly kill, and if not a few more whacks usually do the trick to anything that aint a boss. Rumbler to set up the stagger combo in hordes. 

Rock is used ala the Zealot's throwing knives to be a quick react throw to kill disablers, bombers and snipers. could be switched to save more points/your preferred but rock is very useful in this and i wouldnt take it off. 

Curios (and the Lynchpin replacing steady grip) is much more team comp heavy but general rule of thumb is you dont know if you'll have a Skitarii with a build that would complement it, go basic assortment of triple max toughness, 3 max combat ability regen, 3 max ally revive speed 2 max gunner damage resist, and 1 max bomber damage resist. It's ultimately your preference but if you want to copy a variant of his build that's much more depedent on having a Skitarii in the party, click the link and see it yourself.