Twisted Ten Achievement Guide: Locations of Evasive Six and Elusive Four

[Drewacez]

Question. To spawn these elite mobs do you need to kill all mobs or just that mob type?

[Ebereasider]

Question. To spawn these elite mobs do you need to kill all mobs or just that mob type?

Just that mob type, no need to kill all. I've updated the post.