Step 1) get 5 skill points.
Step 2) put those skill points into the AoE tree.



Step 3) pick ANY skills with area of effect. Greatsword arc and Spin. Aassasin swords with wide arc. Grenade launchers. Flamers. Any Psyker AoE skill. Grenades. Anything works.
Step 4) Go faceroll the highest difficulty.

- Always target big groups of enemies.
- Try to pull singled out elites together into groups, ideally into horde-type enemies (or pull the horde onto the elites), that will allow you to oneshot them.
- If you're getting overwhelmed by ranged, back away a little, that will interrupt their shooting and they will pursue, grouping up + giving you an opening to re-engage.

As melee, use movement skills. Shield charge, Axe execution, Hammer jump, Assasin jumps and charges, even dodges.
If ranged, you can usually just target the group and fire.

The skill should give you +1% to dmg, for each monster hit by your AoE. If there are 20 monsters in the target area, you should get +20% dmg. Currently, you get +2000% or even more.

Here's an example without OD, on a level 11 crusader, on an Armored enemy. You see the two hits barely hurt him. The damage dealt with the spin was 144, but since the enemy has ARMORED, we hit with the spin for 288.



And next example is after using a Mind Reset and putting points back into OD. You can see that one spin takes 3/4 of his health instantly, and the DoT from the axe finishes him.



The hit number said 3576, but since the enemy has ARMORED, the damage was reduced by 50%. So the damage dealt was actually 7152. The bleeding DoT tick for 715 confirms my math.

This was recorded on a campaign mission to find Klosterheim. The difficulty setting was RED, and it said -39% damage dealt.


Youtube link.

Enjoy!