Saints Row IV features some pretty powerful, out-there weapons. One of the silliest weapons in the game is the Dubstep Gun, and it's super fun to use. Unlocking it requires you to complete a quest line from Keith David. Read on to get a step-by-step guide to the missions you need to complete to receive this weapon.
Start the Quest
You can start this side quest after completing either The Real World or Hello Teacup mission. It is called Campaign Trail of Destruction. Choose it from the side quest menu.
Talk to Keith
Talk to Keith David on your ship. You can get there using a portal in Brickston in Steelport.
Finish a Race
Go to the race in Yearwood in Steelport. You need to get at least a bronze medal in this Blazin' Challenge. Finish with 10 seconds left for Bronze, 25 seconds left for silver, and 40 seconds left for gold.
Disrupt the System
Go to Loren Square in Steelport. Start the flashpoint and do as much damage as possible in the time limit using the Singularity Gun. For bronze get 300,000 points, for silver get 500,000 points, and for gold get 800,000 points.
Kill the Zin
Head to Bridgeport in Steelport. Take out the Zin army and reclaim the area.
Assassinate the Rogue Program
Go to the top part of Bridgeport, just underneath The Grove in Steelport. You will need to destroy a bad version of yourself. There will be three targets, but only one is the real one. Take it out to complete the mission.
Talk to Keith
Go back to your ship through the portal after completing all the missions. Talk to Keith David again and he'll reward you with the Dubstep Gun.