The Glory of the Nerub'ar Achievement awards players with the rare Reins of the Shadowed Swarmite - one of the little swarmites that transports players around the raid platforms in the instance.
Completing this achievement in World of Warcraft: The War Within requires players to enter the raid on difficulty normal or higher and complete a unique achievement during each boss fight - 8 different achievements in total.
Here is a concise guide on how to complete the Glory of the Nerub'ar Raider achievement and get the Reins of the Shadowed Swarmite mount, plus players tips on how to find a group:
The Glory of the Nerub-ar Raider achievement requires completing these 8 tasks in the Nerub'ar Palace raid on difficulty Normal or higher:
Slimy Yet Satisfying - Defeat Ulgrax the Devourer while keeping the Spider Silk Grub alive
You Can't See Me - Defeat the Bloodbound Horror after all players are Slimed! and then defeat a Volatile Ooze
Sik Parry Bro - Defeat Sikran after all players are affected by Riposte
Cowabunga - Defeat Rasha'nan after all players ride a wave of Rolling Acid
Would You Still Love Me If I Was a Worm? - Defeat Broodtwister Ovi'nax after everyone /loves a Disheartened Worm
Kill Streak - Defeat Nexus Princess while she has an active Kill Streak
Love is in the Lair - Defeat the Silken Court after Anub'arash and Takazj have gained the Bond of Friendship
Missed 'Em by That Much - Defeat Queen Ansurek after all players use Abyssal Conduits to travel underneath her during Frothing Gluttony
Players can track the achievement by going to the Achievments tab, finding the Glory of the Nerub'ar Raider achievement, and checking the "Track" box in the bottom corner. Raid leaders can use this and other add-ons to ensure the group is making progress on the achievement.
Here's how to complete these individual tasks in Nerub'ar Palace:
Slimy Yet Satisfying: There is a Spider Silk Grub in the back of the Ulgrax the Devourer arena. The grub can't be healed and will get one-shot by any mechanic. Your best bet is to pull the boss as far as possible away from the grub and have one or two people camp the grub to make sure it stays safe.
You Can't See Me: For this achievement, all players in the raid will need to get the Slimed! Debuff. To get Slimed, players must first get hit by the Gruesome Disgorge frontal to go to the Unseeming. Then, players need to walk over the Shifted Oozelings on the outskirts of the arena. The oozes can't be targeted, and it's likely you've never noticed them before.
After everyone has the Slimed! debuff, stack together and spawn the Volatile Ooze. After the ooze is defeated, players can go ahead and defeat the Bloodbound Horror. Players keep the Slimed! debuff even if they die, so this achievement can be done even if players die during the pull.
Sik Parry Bro: For this achievement, all players will need to get the Riposte debuff before killing Sikran. There are 4 weapon racks outside Sikran's area. Raid leaders should organize their group into groups of 4 and let the first 4 players grab the weapons.
Upon starting the fight, there will be an extra action button to throw the weapon at Sikran. Sikran will deflect it, giving the player the Riposte debuff. Then, 4 more players can pick up the weapons. Repeat this until every player in the raid has the Riposte debuff and then go ahead and defeat Sikran.
The Riposte debuff also remains on players after they die, so it's okay if players die after using the weapons on Sikran. Lower geared players and squishy classes should be the first to throw weapons during this fight.
Cowabunga: This achievement states that all players must ride "a single rolling wave per cast of Rolling Acid." This means that players need to purposely get his by EVERY cast of Rolling Acid during the fight. While players can use defensives to ensure staying alive during the fight, players cannot use immunities that prevent knockback.
Would You Still /love Me if I Was a Worm requires several steps before and during the Broodtwister fight. In the trash pack leading up to the arena, players will find a Mysterious Glowing Egg. Every player needs to pick up the egg and bring it with them into the arena. Players will still be able to cast while holding it.
The player holding the egg will need to be hit by two casts of Experimental Dosage in order to break open the egg. If players don't get randomly chosen to have this mechanic, they can still with someone who does while holding the egg.
After the egg hatches into a Disheartened Worm, every player will need to get the worm and /love it. Then players can defeat Broodtwister.
Kill Streak: To start Princess Ky'veza's kill streak, one player needs to click on the brazier in the left side of the room. The Nexus Princess will rush to the player and one-shot them, starting her kill streak. Afterwards, players will need to keep dying to mechanics in order to keep up the Kill Streak buff until she is defeated.
Love is in the Lair: Outside the boss room there will be two interactable items: the Anub'arash Plushy and Takazj's Favorite Candy. Players can grab these two items and throw them to the Silken Council bosses with an extra action button.
Giving the bosses these two items will give them a buff that heals them for 1% of their health every second if the bosses are close together. Players just need to tank the bosses apart and defeat them while they have the buff to get this achievement.
Missed 'Em by That Much: The achievement for Queen Ansurek takes place during the third phase of the boss fight. Every player doesn't have to be alive to complete this achievement.
In P3, Queen will case Abyssal Conduit on two random players, dropping portals at their locations. Players will need to drop these portals on opposite sides of the arena so that when players step into one portal, they will travel under the boss to the other side.
Once the portals are in place, wait for a cast of Frothing Gluttony and have everyone take the portal. This will give Queen Ansurek stacks of the debuff Missed 'Em by That Much. Dead players will automatically give her a stack as well. All players either need to die before P3 or take a portal underneat Queen Ansurek to fulfill this achievement.
Completing all of these achievements will earn players the Glory of the Nerub-ar Raider achievement and the Reins of the Shadowed Swarmite!
If you don't raid a guild, you can still find groups to complete this achievement. Players can either look for an achievement group in Custom Looking for Group, or use communities on Reddit, Discord, and Facebook to find a group.
There are plenty of active communities on Facebook that are currently offering sign-ups for the Glory of the Nerub-ar achievement, including World of Warcraft Mountfarmers and WoW-Solo Player's Haven.
Glory of the Nerub-ar Raider Groups:
WoW Solo Player's Haven
EU - FROG KIN HELL achievement group
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How to get the Shadow of Doubt Mount in World of Warcraft: The War Within
How to Complete A Cool Twenty Years and Get the Coldflame Tempest Mount
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