to get assigned this zone, I did single boss-Pyol Skinsear was the name to kill
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Mulila Forestwarden 110th season RANGER
aaror-95th lvl cleric tahnorma-110th lvl shammy kutekittie 93rd lvl beastlord darkmulila 81st lvl necromancer and a few other classes like druid, enchanter, magician, and rogue Torvonnilous forever =)
"never turn down a good fight and always help friends in need =)"
The adventure offered is random but you have some control. This is important because Arena of Chance is the LDoN zone that takes the most work to complete Hunter achievements in, so that's the one to focus on for Hunter achievements.
In Rujarkian theme, if you are choosing Mob Count type adventures, look for a Mob Count of 54. Both Arena of Chance and Hidden Vale have that number.
If you are choosing Single Boss type adventures, look for these 3 bosses: Pyol Skinsear (could be Arena of Chance or Fortified Lair) Elokoh the Trainer (Arena of Chance only) Warmaster Skooru (could be Arena of Chance or Bloodied Quarries)
with the caveat that it will not offer any of the last 5 adventures you last participated in (High and Normal count as different adventures, even if they are otherwise identical), (different Single Bosses count as different adventures, even if in the same zone).