Modern Warfare 2: "Atomgrad" Raid Guide - All Puzzles, Dive Passage & Walkthrough

Published: Dec. 15, 2022
Updated: Dec. 16, 2022

German English

The first raid episode "Atomgrad" is out for Call of Duty: Modern Warfare 2 and we have an entire walkthrough with the solutions to all the tasks, puzzles and directions.

The guide at a glance: Modern Warfare 2 has received a new update, which also brought the first raid. This one takes about one to three hours, depending on your approach, though we've heard of 6 hours plus. To avoid this, follow our complete guide to the first raid episode Atomgrad in MW2:

  • Unlock Raid
  • Preparation & start of the raid
  • Solve the first number puzzle
  • Complete the diving passage
  • Solve the second number puzzle
  • Defend the door and disarm the bomb

Complete guide & walkthrough of raid Atomgrad in Modern Warfare 2

Optimal Preparation & Start: Before the actual raid begins, you need to invite two other friends. There is no matchmaking, and a solo number does not work either. Before that, you have to unlock the raid using one of the  three given methods. After that, you have to choose your role. Although all players can choose the same role, you should choose one of three roles Assault, Medic, or Recon.

Then you start the MW2 raid and watch the cutscene, which should explain the procedure. You climb into a bunker and off you go. No matter what you do at the beginning of the raid, be quiet! You start with silenced weapons, and you should use them that way. In the first few moments, the characters will even give you tips on which enemy to take out and when. Stick to it, otherwise, the alarm will go off, and your further way will be much more difficult.

Solve the first number puzzle in Raid Atomgrad

At a certain point, a gigantic metal gate will block your way. Here, you have to solve a number puzzle in a room directly in the water. Enter the room and take a good look around:

  • To the left is a console that displays Cyrillic letters.
  • In the middle of the room, there are monitors of a surveillance system.
  • At the end of the room, you will find an input console.
  • Next to the console is a Red button.

First, press and hold the red button at the end of the room next to the portcullis. One player must crawl through and get to the surveillance system screens. A second player operates the surveillance system in the first room. Player number three then gives the three to five letters that the first console spits out. Now the two players use different camera perspectives to search for the letters in the rooms. Found them? Then enter the numbers below them, and player number three will enter them into the input console.

After that, you have to switch positions because each player can only enter one code. In total, you have to solve the number puzzle in MW2 Raid Atomgrad three times. Once you have completed the puzzle, the blue metal gate will open, and you can swim through it.

Attention: Player number three will give you more than three letters after the second round. However, you will only find three matching letters, which is just as intended -- don't get confused!

modern-warfare-2-atomgrad-raid-5-letters

Here you can see that later in the number puzzle there are far more than 3 letters.

Diving passage & oxygen tank section in MW2 raid Atomgrad - Solution

Once you've killed the enemies in the hall, you'll face the next problem in the Modern Warfare 2 raid Atomgrad: You have to dive, but you only have one oxygen tank at your disposal. So you have to share it well. To do this, it's best to always stay close to each other and swap the tank regularly. The player who needs oxygen at the moment can grab the tank by pressing the interaction key (F on PC). If one of you drowns, he has to start over and you have to pick him up.

modern-warfare-2-atomgrad-raid-oxygen-location

At this location, you'll find the oxygen tank in Modern Warfare 2's Atomic Level Radi.

Tip: Don't press the sprint button to swim faster. You will use up the oxygen in your lungs as good as twice as fast.

So swim slowly, share the oxygen well, and watch out for the wires in the water.... the damn wires. If you touch the wires, everything around you flies up in the air, they are trip hazards. The easiest way through the underwater section in the Atomic Grade Raid of MW2 is to follow the arrows on the walls. These arrows will show you the right way. One disadvantage is that if you go directly, you will miss many of the hidden secret documents that are scattered throughout the bunker.

modern-warfare-2-atomgrad-raid-way

Follow the arrows in the underwater section of the Atomic Grade Raid in MW2. (Source: MrDalek)

How to open the grate door in the water: Shortly before the first checkpoint, you will come to a grate door, next to which there is again a red button. One player must hold it down again while the other two swim through the door. On the other side you will find another button, hold it down and let the last player swim through the door as well.

Shortly after, you can dive up a stairwell toward the surface. This is the first checkpoint. If you drown from now on, restart here. Fueled up with air? Good, then dive back into the water and further down. Open the door into the next corridor and follow the arrows on the walls again. You'll come to a hole in the floor, but it's covered by wires. Blow up the wires by having a player swim into it. We did not find any other solution in our runs. Keep diving until you reach the safe area.

The Atomic Grade Raid in Modern Warfare 2 now allows you a few meters to take the word "walkthrough" seriously, too, because you are allowed to run. Until you reach a ravine. On the opposite side you will find documents, but jump down into the water to continue. You can probably guess: You have to follow the arrows.

Turn on the generator and solve the switch puzzle

You will arrive in a large hall with an air bubble and generator at the top. You have to activate this generator. But first, position one player in front of the red button, which is located in a separate room next to the portcullis. Player number three grabs the oxygen tank and waits in front of the gate:

  • Player one activates the generator and stays there too!
  • Player two holds down the red button to open the portcullis.
  • Player three swims through and into the room in front of the stairs and presses the red button here.
  • If necessary, player one must turn on the generator again.
  • Players one and two now also swim through the gate.

Afterward, swim up the stairs and re-equip in the armory: Congratulations, you have successfully mastered the diving passage of the Atomic Grade Raid.

Solve second number puzzle from Atomgrad

After an extended shootout, another number puzzle follows, where you have to take turns at the control panel. The difference now, however, is that there are no cameras or surveillance systems. In fact, you are now standing in the places that the cameras monitor. That is, one player must go to the "grandstand" room (lit in white) and another must go to the nearby (lit in orange) room and watch the screens.

Player one now has one minute to pass his Cyrillic letters through to the other players. Players two and three must then find matching numbers again. The next player then has less time, and the last player only 25 seconds. If you don't succeed in solving the second number puzzle within one minute, the control panel will reset itself to zero and spit out new letters.

Tip: Make clever use of the supplies located at the switching console. Place mines and the Centry gun so that they defend the players in the two rooms. They are constantly attacked by bomb drones and bots that respawn endlessly.

More about Modern Warfare 2 & Warzone 2

Complete the Atomic Grade raid in Modern Warfare 2 - Defuse the bomb and defend the door

Once you've solved the second number puzzle, you're only a few minutes away from completing the raid. Now you have to survive for four minutes, then the door will open -- at least that's the plan. After about a minute, enemies place a bomb on the door, which you must disarm as quickly as possible. Three minutes later, the final door opens and the final cutscene of the Atomgrad raid plays. Now you can pick up your Raid Rewards for Atomgrad and play something else!

When do new raids release? New raid episodes are released at intervals of about two months with the start of a new season. There should then be a total of five episodes that continue to tell the story of Modern Warfare 2.

If you have any questions or are still stuck on something, please write us a comment or contact us directly via the community discord (via linktr.ee).

Every tip mentioned in this guide has been practically tested by our team to ensure you receive reliable and accurate information.
The interest in digging deep into the gaming industry stems from the DayZ Mod for Arma 2 in 2012. Kevin started working in the gaming industry in 2016. First as a trainee at Survivethis, the biggest German Survival-Games-Site at that time. Only half a year later, he got accepted at Gamestar and later MeinMMO. Now, on Guided.news he implements all his Knowledge to deliver comprehensive news, guides, interviews and more unique topics.
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