Ultimate DeffKrush Smacka build
 Ogryn Build - Warhammer 40k: Darktide 

Dis' one smacks 'ard! 

Get stuck in wif the frontline, always heavy attack, if boss, slap it around. 

Fully charge heavy attacks against anything with armor, watch it fly. 
Charge into anything same size as self, then smack your way back to the friends. 

Grenades only for securing revive of fallen comrade. 

Use kickback for anything, horde clear = 1 shot, anti sniper across the map, 2 shots. 

Knocks down anything it doesnt kill. 

TLDR

Heavy attack to make things bleed, become immortal, run through things to smack harder and faster, fully charge heavy attack to get the +40% damage boost on top of that. 2 shots crushers with heavy melee, slaps chaos spawn, beast of Nurgle and plogryn around if slap on  weakspot. No need to heavy attack them first, just slap. 

This build is utilizing the 30% toughness damage reduction inherent in the ogryn skill tree, if you dont like it you can shift some of the points for other options. 

There is however no point in the +100% toughness regen when at 25% health on this one as you never lose toughness as long as you heavy attack. And the become uninterruptible while charging heavy attack is pointless on ogryn, the only thing interrupting you is a plogryn kicking you into the stratosphere. 

You also take 15% less damage while charging heavy attack, so do a fast heavy attack to make things bleed, then start swinging full charge heavy around to just kill everything. You are supposed to stay in the front always, so you dont need the aggro talents either since you are usually the first thing enemies see anyways.