Among all the new Exotic weapons that can be found in Destiny 2: The Final Shape, is the Ergo Sum Exotic Sword. This Sword is pretty unique, and is actually required before you can complete The Final Shapeโs primary quest line, so one way or another, if youโre playing the new expansion, youโll get your hands on Ergo Sum. When you think of Swords, you probably think of Heavy Ammo weapons, right? Thatโs what makes Ergo Sum so unique. Itโs actually a Special Ammo Sword, and the first of its kind.
As you make your way through The Final Shapeโs main quest, youโll get a couple of other quests to do on the side before you can progress, one of which being the Destined Heroes quest. The Destined Heroes quest will be the one that awards you with Ergo Sum. Youโll unlock the quest after you complete the campaign missions themselves, so expect for it to appear after youโve weakened the Witness.

The Destined Heroes quest contains nine steps, in which you must:
- Listen to Hive messages from the radio in the Lost City
- Complete the โQueens, Part Iโ activity
- Get in contact with Micah-10 in the undercroft of the old Tower
- Speak with Cayde-6 about โOperation Super-Secret-Hush-Hushโ
- Check in with Ghost in the Lost City
- Complete the โLost in the Lightโ and โFound in the Darkโ quests to explore the possibility of synergy between Light and Darkness
- Complete the โQueens, Part IIโ activity
- Speak with Ghost about everything thatโs happened so far
- Collect and use the Dyadic Prism in the Sacrarium to โMake Your Own Fateโ and shape the Ergo Sum Sword
Throughout the process, youโll unlock some additional parts to the Prismatic subclass, as well as learn some new mechanics that force you to redirect fire to break Hive Runes without actually touching them at all. That, and youโll learn a bit more about Savathun and her intentions.
Destiny 2 is now available on PC,