Plane of Disease Hunter Achievement

 You only have to hunt in two parts of the zone for this Hunter achievement, it's one of the easier ones of the PoP expansion pack. Just north of where you zone in there's two nameds (a sengian fly and a malarian metamo) and in the cave system at the southern most portion of the zone you'll find the other two nameds, (a disease infested bubonian and an arachnae parian).

 

Required Enemies for Hunter:

an arachnae parian
a disease infested bubonian
a malarian metamo
a sengian fly