Gjallarhorn is one of the most storied guns in the Destiny franchise, and its return to Destiny 2 has come with some fanfare--you'll have to complete the new dungeon, Grasp of Avarice, as part of the game's new Bungie 30th Anniversary celebration DLC. It's worth doing, though, because Gjallarhorn is just as powerful as Destiny 1 Guardians will remember. And once you have the Exotic rocket launcher (use our Gjallarhorn guide if you want to know how to snag it), you'll want to unlock its Exotic catalyst to increase its power even more.

To find the catalyst, you'll need to do some specific things in the Grasp of Avarice dungeon. The good news is, you can complete these steps on either dungeon difficulty, which makes the catalyst pretty easy to nab if you know what you're looking for. Here's everything you need to do to earn the Gjallarhorn Exotic catalyst.

Three Chests In The Grasp Of Avarice

Like many other Exotic catalysts for special weapons like Gjallarhorn, you'll have to solve some puzzles within the Grasp of Avarice dungeon in order to get this catalyst. This is a much easier process than with guns such as Vex Mythoclast or Whisper of the Worm, however. In Grasp of Avarice, you need to seek out three special treasure chests, which you'll have to unlock by fighting three specific enemies.