It's Halloween in Tyria, and the Mad King has returned. Starting today, all Guild Wars 2 players will log in to find a ton of new content in the MMO, from holiday-themed decorations to transformative costumes all the way up to whole new areas, mini-dungeons, and bosses. Some of these events will only happen for the… » 10/22/12 5:30pm 10/22/12 5:30pm