- Bonus event ending (achievement: “Unfriendly Skies”).
- Commentary overview of boss mechanics included before each engagement.
“Once Horrik is down, he drops a Cannon Core. If the battle was won in less than 15 minutes, players have a chance to destroy the escaping Aethership. Use the new red platforms to move over to the waiting airship and use the core on the cannon up front to destroy the airship.”
Source: http://wiki.guildwars2.com/wiki/Aetherblade_Retreat