As we approach the release of the next GW2 expansion, the ArenaNet team has released a new set of achievements and story unlock tokens for Living World Season 2.
New achievements for the “Gates of Maguuma” and “Entanglement” chapters are available in the Bonus Events section of the Achievements panel. Finishing these achievements forwards your progress on the Season of the Dragon meta-achievement, which is in the Side Stories achievements.
The rewards for completing these achievements are pretty great, and include an ascended weapon, a 32-slot bag, a legendary amulet, and more. Read more about it here on the site.