It's funny you mention the axe in UK- which is one of my favorites btw. Took me a while to figure out wtf was killing my team after he died rofl. Had my graphics too low on my main at the time making it very hard to see.

Tank facing your team so you can see what's going on with them. You'll see the axe flying around- gotta bind those strafe left/right keys for your slaves- then just move them when you see it coming. It's easy once you see what's going on.

Also when Ingvar turns undead your non tanks need to be out of melee range or they can get 1 shotted by his smash. Also in UK you can avoid like 4 packs of mobs by just hugging the wall making the run quicker.

All down hill from here bro only gets easier as your gear gets better.