I’ve queried Shimmer Strike with dual heavy attacks and received this response:
The attack has to kill a elite or special otherwise it’s removed - this is intended.
If you hit anything and it doesn’t kill, you will lose Stealth.This is why Shade has these perks:
- Melee attacks out of stealth has 100% crit chance
- Charged Critical Backstabs always slays man-sized enemies. (i.e. not Monsters, Lords or Chaos Warriors)
This means you can always kill the elite if you land a Charged attack in their back, but it will also work as long as you one shot the Elites or Specials.