Here's how to get Destiny 2's Exotic handcannon, Sturm
While most of the weaponry in Destiny 2 is futuristic in nature, sometimes you just can't beat the classics. That's what Sturm is, a classic handcannon and a relic of the Golden Age that you receive as a quest reward.
Here's how to pick it up.
Intrinsic Perk - Accomplice: Kills with this weapon fill the magazine of the equipped Energy weapon from its reserves.
Extended Barrel: Weighty barrel extension. Increases Range. Decreases handling speed.
Extended Mag: This weapon has a greatly increased magazine size, but reloads much slower.
Storm and Stress: Kills with Energy weapons grant bonus precision damage until next reload.
Combat Grip: Less vertical recoil; increased stability.
Complete the campaign and reach level 20. After that, you must complete two quests on Nessus, titled "O, Captain" and "My Captain." Your reward for those quests is a Legendary sidearm called Drang, and a sheet of paper that will take up a slot in your Kinect weapon inventory.
From here on out, you are on a journey for Sturm, and Drang is your guide.
Your first step is to take this sheet to the Cryptarch, Master Rahool, who will decode it for you and explain what you need to do. You'll need to kill 10 Fallen on Nessus with Drang, as well as decrypt five Legendary Engrams and one Exotic Engram. You will need to farm activities like Public Events and Strikes to hope for these Engrams to drop.
Once you do that, the next step is to speak to Tyra Karn at the Farm. She will task you with killing multiple Fallen on Nessus with Drang without reloading, and killing 10 Fallen Major enemies with Drang, also on Nessus.
The first part is easy enough as you can find a spawn on most locations where you can farm low-level Dregs for quick multikills. Killing 10 Major enemies (yellow health bars by default) could take some time, but a decent method is finding a Lost Sector with Fallen inside of it and repeating it over and over again.
Return to Tyra Karn and she will give you the final step in the Quest. She will send you to the "Exodus Crash" Strike on Nessus and you will need to kill a Major Servitor named Kendricks-7. Once you do so, Sturm is all yours.