
Destiny 2's Graviton Spike hand cannon is one of The Edge of Fate's biggest post-campaign pursuits. This Exotic hand cannon blends Arc and Stasis, making it perfect for builds that use either element and even deadlier in Prismatic.
You must finish the Edge of Fate campaign before you can unlock Graviton Spike, since this weapon is tied to a few events that happen throughout the story. Once you cross off the final mission, The Message, interact with the Altar of Reality to unlock the Graviton Through the Ages quest.