With over a hundred Exotics to chase, Destiny 2 has no shortage of objectives and quests for players to pursue. Some of these Exotics come with unique quests that require specific challenges to be completed.

The odd Rat King Exotic Sidearm is a great example of this. For such a small weapon, this gun packs some serious firepower when in a team of other Guardians wielding it. Earning this weapon requires some work, though. In this guide, we will go over why you should obtain Rat King and how to earn this Exotic Sidearm and its Exotic Catalyst.

8 What Is Rat King?

Rat King is an Exotic Sidearm that becomes stronger the more Guardians use Rat King near you. By itself, it falls behind similar Legendary Sidearms. In a group, though, Rat King is incredible.

Do not let its small size fool you. It starts with a rate of fire of 300 rounds per minute, ramping up as more players use this gun. The damage will ramp up as well, rivaling certain Special weapons when you reach 6 stacks. Those who coordinate buffs and debuffs can even take on Raid bosses with this gun. For those who play solo, this gun also turns you invisible after getting a kill and immediately reloading. If you haven’t obtained Rat King or used it since the Sidearm buffs from Season of Dawn, get this weapon a try.

7 Complete “Enemy Of My Enemy”

If you don’t own Rat King, obtaining it is tied to an Exotic quest you must obtain. To begin, talk to Sloane and begin the “Enemy Of My Enemy” quest.

This is a standard romp through Titan, killing Hive and Fallen as you navigate the level. Towards the end, you will be given a choice between killing a Fallen Captain or Hive Knight. Your choice does not matter, although a certain weapon’s questline will involve the Fallen Captain again.

6 Find A Teammate With Rat King

You should now have an item in your Quests tab that provides a riddle. Before you continue on your Rat King journey, find a teammate that has the gun.

Fireteam members are required for you to progress this quest. As the gun revolves around having allies that use it, the quest follows the same principle. This member must have Rat King for you to continue the quest. If you don’t have any friends with this gun, look for a group using an LFG site or Discord server.

5 Rat King Puzzle 1: Patrols

Now that you have a teammate, you can begin the riddle solving. For the first riddle, you will need to complete Patrol missions on any planet you like.

What matters is that you complete three Patrols with a fireteam member that is using Rat King. The Patrols themselves don’t matter. For fast results, complete kill-based Patrols. These are denoted with a triangle icon or 5 diamonds. Once you finish three Patrols, you will be given a new riddle.

4 Rat King Puzzle 2: Public Events

Public Events are the key to this next riddle. With a teammate with Rat King by your side, you must complete two Public Events. These events don’t have to be Heroic for completions to count.

The European Dead Zone (or EDZ) on Earth is a great place to complete this quest step. There is almost always a Public Event active somewhere on the planet. Simply join in on an event and complete the objective. Events that ask you to kill a miniboss, such as the Fallen Walker or Fallen Servitor events, are the easiest.

3 Rat King Puzzle 3: Crucible

Don’t feel bad if this riddle doesn’t make much sense to you. When Destiny 2 first launched, Crucible was a 4 versus 4 playlist, unlike the 6v6 mode it is now.

Riddle 3 is simply asking you to complete two games of Crucible with a fireteam member wielding Rat King. These games can come from any playlist, and you do not need to win these two games to progress this step. Momentum Control and Mayhem go by the fastest, but Rumble is a solid alternative if either mode is not active.

2 Rat King Puzzle 4: Nightfall

This step changed a lot since Destiny 2 launched. If you have read conflicting information about this, know that this step is much easier than most articles written before Shadowkeep have stated.

All you need to do is complete any Nightfall with a teammate that is using, you guessed it, Rat King. Nightfalls no longer have time restrictions so having to finish a mission with 5 minutes left isn’t possible. It also does not have to be The Arms Dealer Nightfall like it was at launch. Simply boot up any Nightfall you like on any difficulty and finish it.

1 Rat King Catalyst

Congratulations, you now have Rat King! You might be wondering how to obtain its Exotic Catalyst since that slot remains empty. This part relies on much more RNG than previous steps.

To obtain the Catalyst, you need to complete Strikes or Nightfalls. The chest at the end of the mission has a small chance of dropping this Catalyst. Once you have it, apply it to your gun and find a team that has Rat King. You’ll need fireteam members to kill enemies with Rat King to progress this, but it is rather easy to complete. Your reward is a new perk that grants health when you turn invisible from reloading Rat King on top of generating Orbs of Light on multikills.

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