GW2 Don’t Touch the Shiny achievement guide with detailed walkthrough. Don’t touch the Shiny is a new achievement introduced with the Halloween patch and is located in Caledon Forest.
GW2 Tears of Itlaocol achievement guide with detailed instructions and video walkthrough. Tears of Itlaocol is an achievement added with the Halloween patch for an existing mini dungeon in Caledon Forest.
GW2 Forsaken Fortune dungeon/jumping puzzle guide with detailed explanations. Forsaken Fortune is a new dungeon/jumping puzzle introduced with the Halloween patch and located in Dredgehaunt Cliffs. The actual entrance is just west of Wyrmblood Waypoint, across the icy bridge. This place is similar to the dark room in Obsidian Sanctum jumping puzzle and require extensive use of torches to fend off nasty creatures. It is recommended that you bring a friend or two to this place.
Here is a guide for the new GW2 explorer achievements introduced with the Halloween Patch. This is a work in progress and will be updated as more as discovered. A lot of these achievement locations are swarming with mobs with some are mini dungeons or mini-dungeon/jumping puzzle hybrids. Bringing a friend is highly recommended for this achievement hunting to avoid frustration!