Air Fortress

 is a dungeon instance that takes players into the world of the Ragnarok manhwa.

On iRO, this instance is localized as Sky Fortress.

Story
While resting in Prontera, Chaos and his friends bore witness to Himmelmez's Dark Whisper fortress invading the city with her horde of undead.

NPCs
Enemies Bosses
 * Immortal Zombie Soldier
 * Immortal Corps
 * Sky Fortress Key Keeper
 * Immortal Zombie Assault
 * Immortal Cursed Zombie
 * Immortal Cursed Knight
 * Immortal Wind Ghost
 * Immortal Nightmare Shadow
 * Immortal Angry Shadow
 * Immortal Death Shadow
 * Cursed Soldier of Bijou
 * Stephan Jack Ernest Wolf

Walkthrough
Time Limit: 1 hour

You will need an Air Fortress Key in order to participate in this instance and every time afterwards.

Patches

 * Patch (2016 Mar. 30)
 * The boss monster in the Episode 16.1 Memorial Dungeon "Air Fortress" is changed to drop their card.
 * Patch (2015 Mar. 11)
 * The final boss of the Air Fortress "Stephan Jack Ernest Wolf" reduces the frequency of using the skill "Hallucination".
 * Patch (2015 Mar. 04)
 * Episode 16.1 The Balance of Memorial Dungeon in the Air Fortress is adjusted.
 * Stephan Jack Ernest Wolf's stamina is upgraded.
 * Stephan Jack Ernest Wolf Increases the number of monsters in the final battle.
 * Stephan Jack Ernest Wolf's skill has not been activated in some conditions.
 * The probability of creating a key-reducing monster is reduced.
 * [[Image:RO-minilogo.png]] Episode 16 (2015 Feb. 25)
 * Added Air Fortress instance.