a Dire Wolf Stalker
 

Is there any general consensus on how to get this guy? Who here has had success killing him on p99 and how/where did you do it? Most of the info I've found pertains to the live servers and I'm not sure that's to be trusted on p99.

kill wolves in Iceclad around the Druid/Wiz ring

it will spawn eventually - very rare, could take several hours

Did that on beta. I only killed wolves, skipped the giants and dervishes, and he spawned after a few hours.

Wolves + Giants share a spawn table. Dervishes do not. Kill everything from EW to the portal ring that is not a dervish.

Clear the area between the bridge to EW and the port ring. Kill everything and you will have a better chance to spawn him. If able round up a bunch at a time and kill that way you don't have to keep running around a few share the exact same spawn point near one of the skull block things so you clear a bunch then sit near there and when they all respawn rinse and repeat.