The Bungie 30th Anniversary Event is officially live, which means there’s a bunch of new content coming to Destiny 2. Along with a six-player matchmade activity, players can explore the new Grasp of Avarice dungeon set in the fabled loot cave. There’s also a bunch of new armor and weapons that users can unlock or purchase in the Eververse store, all of which are tied to the history of this developer.
Of course, one of the most exciting additions is the fabled Gjallarhorn exotic rocket launcher. While unlocking the launcher is its own lengthy process, you can also get a catalyst for this rocket launcher. Keep in mind, you need to complete the entire Gjallarhorn quest first, so follow my walkthrough here if you haven’t already.
How to Get the Gjallarhorn Catalyst
Before we get into how to get the Gjallarhorn catalyst, I want to give credit to Youtuber Newo for seemingly discovering this first.
Once you’ve earned the Gjallarhorn, you’ll need to head back into the Grasp of Avarice dungeon. This can be on any difficulty and you need to at least complete up to the final boss. Your goal is to kill three yellow bar Reaver Vandals and deliver the Burden by Riches debuff they drop to three different chests scattered throughout the dungeon. You will not get anything for opening the first two chests, but unlocking the third one will reward you with the Gjallarhorn Catalyst.
You will find the first Reaver Vandal right after you enter the loot cave at the start of the dungeon. Along the narrow walkway in the cave, you will see the Reaver Vandal on the cliffs to the right. Killing the Vandal will give you the Burden by Riches debuff. Now turn around and run back the way you came towards the metal scaffolding. At the top of the scaffolding will be the chest. Open the chest while you still have the debuff.
The second Reaver Vandal can be found right after the large cylinder is rolled down the stairs in an attempt to crush you. Dodge this incoming trap and make your way to the room where you normally climb into the vent to progress further. Damage the Reaver Vandal on the left by some boxes until he drops an engram, then quickly go into the vent with your debuff. Go right, left, and then go immediately right along the wall when you exit the vent. You should see the chest on a small platform (shown above).
The final chest is only accessible after you’ve completed the Fallen Shield encounter. Head to the center island and, instead of launching yourself up into the massive hole you made, point the cannon towards the back of the room. Activate the gravity lift via the Scorch Cannon and rocket yourself to the other side of the room. You’ll find the Reaver Vandal hanging around a small stream, so damage this enemy until he drops some engrams. Pick these up and make your way back to the center island. This can be tricky because you only have 30 seconds, so either have the cannon already pointed towards the middle island or pop Top Tree Dawnblade to fly over the gap.
If you’re a Hunter or Titan I recommend having someone ready to launch you with the cannon to the center, otherwise, there’s barely enough time.
Regardless of how you get to the center island, climb onto the roof of the large round building in the middle. You should see the chest. Opening it will reward you with the Gjallarhorn catalyst. Now you can either finish the dungeon or leave; it doesn’t matter. When completed, this catalyst makes the rocket launcher reload faster and creates additional, stronger missiles whenever your Wolfpack rounds kill an enemy. To complete the catalyst, just kill 400 enemies with this rocket launcher in any activity!