Ahune is an encounter inside the Winterspring set of Mercenary Bounties.
This bounty can be picked up from the Bounty Board and recommends a Party level of 30 to complete it.
You can unlock Ahune by first completing Icehowl.
Can't be damaged. Lose 10 Health whenever an Ice Shard dies.
Potential Ahune Bounty Rewards
In addition to earning Mercenary Coins based on your Party members, Bounties are assigned to specific Mercenaries to allow you to target loot better.
The following Mercenaries can have their loot appear in the Ahune Bounty: