Fallout 76

In order to get this achievement you have to take down the Scorched Queen who is level 95. She will spawn on the fissure prime location when nuked. The event will activate and you will have 30 mins to kill her. She spawns other high level scorched adds of varying types. This event will take the cooperation of roughly 10+ players at level 50+. Power armor is a must and weapons that deal bonus explosive damage, have the two shot legendary, or have Zealot mod (deal extra damage to scorched) are recommended. Zealot armor can be helpful but isnt as neccessary. Heavy weapons such as the .50 caliber machine gun, the Fatman, and Minigun are very helpful as they allow quick damage while she is landed. If a player in your group lays down their C.A.M.P. you can build turrets to help you during the fight. Most turrets aren't going to be very helpful however missile turrets seem to do well but you must keep them powered and repaired. Grenades and orbital strikes can be used when she lands along with stronger melee weapons such as the super sledge. In my completion with at least 11 players this took about 27 minutes. Most players said they went through all of their ammo with one player saying about 5000 .50 caliber rounds, so you will want to make sure you have plenty of ammo. I'd recommend having a player with super duper and chemist craft as many stimpaks as possible and then craft them down into Diluted Stimpaks. Keep a few normal stimpaks to revive other players though.

NOTE: at the time of writing this the achievement is bugged and does NOT unlock.

The other solution to this has great info- but I just got this achievement last night and I wanted to give a few more random insights for first timers. However, full disclosure our queen glitched- she landed on the ground after a couple minutes and then never took flight again. There were a bunch of us and we took her down in probably 12-13 minutes.

At this point, the main issue is getting enough people to help with the queen. Or at least that’s what I thought would be the issue because that’s what everyone is saying. I have been server hopping a bit for exp, and each time I check the silos on the map to see if it looks like other players are prepping to lunch a nuke. Last night I messaged a couple guys at a silo to check if they were going to launch at the fissure prime site, and sure enough they were. I ported to that silo and helped them finish it. This is a good idea to help with because they can be a pain! As soon as prep finished in the last room I quickly messaging every player on the map (click on their white dot and send message) who was over lvl 40 “queen help” and over 10 players showed up! TBH this game has so little going for it I think high lvl players are bored and if you spawn a queen you are giving them something to do. And low level players make for more targets to distract the queen.

Other notes:
-2-3 other regular scorchbeasts appeared for us. I was told this is normal.
-Bring multiple weapons. You will be dispensing so much damage your weapons will break during the fight. I was down to my 3rd melee weapon before the end. I used blade of Bassett, black diamond and the Gracknock axe
-the queen is a “legendary” creature, meaning her health will regenerate after it goes down 50%. So expect to need to take her full health down 1.5x.
-the achievement DID pop for everyone who still didn’t have it. Although it popped for me a little later than I would have expected.
-the game did not freeze for anyone. I think the servers are a bit more stable now.
-I was a lvl 83 with a 1 handed melee build. But there’s no way of knowing how much damage individual players did.

here is a video i made for a visual guide , also you can server hop every now and again to see if the event gets activated