All vocations should be careful with these creatures. The Wyvern Hill is small but filled with many wyverns so you get swarmed very fast. Knights with level 70+ can hunt here easily with nice profit.If knights get swarmed they should use exori. Paladins under level 40 should be very careful because they have small hp and if they try to kill a wyvern it is possible to run into the next spawn. Make sure that you have enough Health Potions with you. Mages and paladins should have some Great Fireballs with them when they get swarmed.