The Singularity Gun in Saints Row IV provides players with a unique opportunity to defeat enemies. A black hole is created using the gun and it sucks in all the nearby enemies, killing them instantly. The Singularity Gun is definitely the most powerful weapon in the game. To get this weapon, you must complete a quest line for Johnny Gat. Read on to get a step-by-step guide through the missions you need to complete.
Go into the quest menu and select the quest entitled WWGD to begin.
Use a portal to go to your ship. Talk to Johnny. He can be found downstairs.
Go to the Rosen Oaks area in Steelport. To shut down the hotspot, you need to destroy three generators on floating platforms. Then you need to destroy the remaining controller to complete the mission.
Go to Yearwood in Steelport. To complete this mission, kill twenty Saints Flow mascots. They look like energy drink or soda cans.
In the Burns Hill area of Steeport, find a flashpoint that involves reclaiming an area from the Zin. Kill all the Zin in the area to complete it.
Go back to the Yearwood section of Steelport and and complete the Tank Mayhem flashpoint. You need to achieve at least a bronze medal to complete the mission. Get 600,000 points for bronze, 1,400,000 for silver, and 2,000,000 points for gold.
In the same Yearwood area, find another flashpoint where you must reclaim an area from the Zin. Defeat all the troops here to complete the mission.
Use the portal to talk to Johnny again on the ship. He will reward you with the Singularity Gun!