As a magician, starting soloing here from early 39, now became 43th lv and they still give acceptable xp. (about 2 blue per 7 yeties) I think none of them conned green to me yet.
I hunted yeties for 20+ hours and found that the spawn time is somewhat longer than 16m 30s, maybe around 19m. I didn'
Ok, this is the easiest way to kill him. All you need are 2 mages level 51+ with earth pets.
First, one mage goes to the outpost with invis on, and targets captain rottgrime (Rottgrime is on the right after you enter the outpost. There will be marines around him that can see through invis, so