You will get this for beating wave 100 of the Crucible.
- Play on easy difficulty (STORY) if this is too much of a challenge.
- Do the crucible when you've upgraded your weapons and abilities. I used fully updated stasis weapon the entire time, using havoc on difficult enemies. Also, I used a fully upgraded BALANCEd MARAUDER on my Barbs of Scorn weapon for a 30 per cent chance to spawn a health lurcher. I fought on using my stasis weapon, only using barbs when I ran low on Nephilim's respite.
When Wave 100 ends, the achievement unlocks.