Kill an elite or boss that has dealt you no damage. The check belongs to that individual enemy. Damage from its companions does not invalidate it, and ending at full life does not erase a hit it landed earlier.
A roaming pack leader



What goes wrong
- One hit from the leader. Healing afterwards does not restore a clean attempt.
- Standing still to finish a cast. Its next swing matters more than one extra shot. Step or roll clear, then resume firing.
- Confusing this with a deathless region. A Region Without a Deduction allows damage but forbids going down before the region boss dies. This achievement allows other enemies to hurt you, but forbids damage from the elite you are trying to settle.
The recorded run
One continuous film includes the route, the boss and every pack attempt. For this guide, start at about 13:17.