I finally got the Demon Hunter class achievement "Hunter or Hunted"! I started working on it a couple months ago with the goal of getting it before year's end.
Strategy: Since Act 4 only spawns demon type creatures, no undead or beasts, I made Act 4 Inferno games (Monster Power 0 for maximum kill speed + max item level drops). I set the game to the final quest and cleared Gardens of Hope Tier 1 & 2 and the Crystal Spire Level 1 & 2. I found that creatures that don't give xp don't count, like the shadow vermin in the Iskatu battle, so there is no reason to do quest bosses or talk to false spirits.
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