Call of Duty: Black Ops 4

Call of Duty: Black Ops 4

102 Achievements

1,825

229-338h

Xbox One
Xbox Series
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Ray-gnarok

Ray-gnarok

In Alpha Omega, stun 10 zombies at once with the Ray Gun Mk. II-V

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0.25%

How to unlock the Ray-gnarok achievement in Call of Duty: Black Ops 4 - Definitive Guide

Build the ray gun mark II - V by turning on the power and activating 4 tvs and feeding zombie souls to them to reveal a number. Write each number in the order you get. Put code in at Rushmore retrieve the mark II frame get kill-o-wat on a gun head to generator room look for a glowing Yellow light shoot it and retrieve the canister head to cul de sac and shoot the power poles that have a sparking yellow light. When done in front of yellow house put canister into generator and fill with zombie souls. Get 3 parts for upgrading mark II. Build the mark II-V. Upgrade by pack a punch mark II-V.

Part locations.
1. Yellow house - hose
2. Storage - metal canister
3. Solitary/Apd control - glass jar

TV locations.
1. Diner
2. Yellow house backyard
3. Site entrance
4. Apd control

ACTUAL ACHIEVEMENT.
with the upgraded mark II-V Run a train in generators let the yellow acid zombies charge up your horde and line them up and hold RT you only have to hit 1 zombie as the beam arks between the others. I got mine on round 20 casual.

Any problems with the guide don't let me know just wrote this because I didn't know the gun had to be pack a punched hopefully this helps someone if not oh well.
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6 Comments
Perfect guide, worked first time thank you
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By martian18 on 19 Jul 2019 23:20
I’ve done this until over round 30 twice it literally doesn’t works. I’ll get 40 zombies in a group and still nothing. What a trash achievement.
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By Lightz on 19 Nov 2020 00:04
Bad guide. You need to fire in short bursts everywhere, if you hold RT you kill the zombies.
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By iVilux on 29 May 2021 17:11
You definitely don't fire in short bursts. Hold the trigger at the front of your train and the zombies stay standing enough time for you to include more zombies. Perfect guide, thanks pal.
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By Liam Neil on 07 Jul 2021 17:40
Holding the RTbutton when hitting a zombiemob is way more difficult. Tried it for 4 rounds and couldnt get it. Firing in burst shots is easier and I got it first try with that method. Both methods work but I recommend firing in short bursts.
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By FreezingCookies on 05 Feb 2022 16:12
Got it first try. Train the Zombies so they are about 4-5 thick from side to side and shoot holding the trigger. Upgraded mine and still worked.
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By CoiledRook16981 on 06 May 2023 13:10
View all 6 comments Show less comments
Here's my quick guide video:


This is a quick guide to show where to shoot from and where to aim.

Easy to do solo. Make sure to pack-a-punch the ray gun mark II - V (the lightning version). Herd as many zombies as possible, funnel them into a tight spot like where i shoot or through a door. Just hold trigger down towards lower body until trophy pops or all die. If all die, rinse and repeat. If playing on casual (recommended) it'll likely occur after Round 15 due to amount of zombies and their health so don't be discouraged if you can't get it beforehand.

Don't know how to build the correct ray gun? A great quick guide for that can be found here:


Happy hunting
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10 Aug 2022 05:15

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10 Jul 2019 05:53

2 Comments
So no explanation on how to actually stun 10 at once? I came here after already crafted the MK2V because it just doesn't pop after many rounds.
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By RealBlazeStorm on 11 Jul 2019 09:00
Okay I just figured it out on my own. When you shoot one zombie with a quick burst, a few zombies around it get stunned.

So train a full horde, then shoot a short burst at 2 or 3 zombies. So don't try and hit all zombies a little, but only 2 or 3.
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By RealBlazeStorm on 11 Jul 2019 09:07
First, you must actually craft the Ray Gun Mk. II-V so see Ray Gun Bonanza (15G) for details on that. The II-V is a laser that stuns then kills enemies. When the gun is not in use, it also recharges ammo. Personally, I found this achievement pretty finicky. I grouped up zombies and sprayed into them when I had a large crowd but it took a couple of attempts before it actually unlocked so keep trying that method. You can also Pack-a-Punch the gun, that may help.
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First you need to assemble an electric beam thrower model II-V, then upgrade it in the upgrader ( video guide ).
Closer to wave 20, zombies will become stronger and will not die immediately from the beam gun. Gather a larger crowd and release a solid beam. You need to short-circuit 10 or more zombies at a time.
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15 Jul 2019 17:56