MW2 'DMZ' BUILDING 21 FULLY EXPLAINED... (How To Get Building 21 Key)

MW2 "DMZ" Building 21 Explained: How To Find Building 21 & How Building 21 will work.
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New area in DMZ: Building 21. Its location is classified. Its benefactors are unknown. But one thing is for certain about the clandestine biological laboratory codenamed Building 21: only the strongest Operators may survive, let alone access one of the deadliest areas of DMZ. Players will need [REDACTED] to access [REDACTED]. With this great risk comes great reward: high-tier Contraband found throughout the building, especially in safes and special areas that require keycard access. What other secrets await you in this facility?

Credit to BobNetworkUK & CodSploitz for the images shared about Building 21 in this video:

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- MrDalekJD

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[stephenwainwright]

I think in this last update they went a little overboard making the AI too strong. It's almost impossible when you're playing with randoms unless you get lucky and get a lobby with two other skilled players if not you spend the whole time there reviving the other two squad mates

[coldfries]

I love what they are doing with the locations to infil, adds a lot of variety!
Honestly i'm excited for the future of DMZ and hope that it becomes a series staple just like Warzone. I really dont want them to abandon this mode, so guys make sure to show some love for the mode!!!

[thPoundcake]

I don't understand what could possibly be in Building 21 that's worth the grind and discovery over anything you can get in the normal map. You can already customize whatever gun you want, what contraband weapon could be better than something you can already make?

[robertnapier]

7:00 one more thing I wouldn’t be surprised if the enemy players teaming up is a frequent occurrence in building 21. It won’t guarantee a good time against shadow company but given that they will be hard to go up against it would make sense for teams to go strength in numbers and team up to fight against a common foe. The enemy of my enemy is my friend.

[coldfries]

If i had to guess... i would say they are building a system which is based on different locations having different loot you need to e.g. craft new gear or upgrade you gear, maybe some sorts of perk system like CWZombies.
So i think every infil-location will have some sort of primary objective to it (e.g. a Raidboss), depending on its size of course, and a own and unique gameplay style with different objectives.
Teams can work together, or against for more risk/reward. I really really like the path they are going for, i love that they try out new stuff! That's what keeps (me personally) VERY excited for the future of this game mode.

Obviousy this mode is still in Beta, and there is a loooong long way for improvements, bug fixes etc.
But for what it's worth, it's already super fun and challenging with a high replay value. Kudos InfinityWard! I'm finally excited for Call of Duty again, huge potential!

[christopherherrera]

Played DMZ with my squad yesterday this mode is going somewhere!!! So much fun

[barrymafiztna]

Been playing strictly DMZ the past week or so. Such a fun mode and let’s you level up your guns pretty quickly.

[Petra]

Wish they would add custom blueprints you can't replicate in gunsmith as rewards in DMZ. Would make the replayability better and imagine if they added a market place to buy and sell custom blueprints

[whothehell]

As someone who EXCLUSIVELY Mained Velikan from mw2019, I’m so excited to see him making a return! Such an underrated character imo

[batmayyn]

Yeah, but the high tier loot is cool, but the key item behind it is the Chimera AR, yet extracting with these premier weapons doesn't unlock the blueprint, just the base gun, so what's the point of this new area? Plus, we as players are going into this area fully kitted more often than not, so unless they drop a 4 plate chest rare drop, and an extra large backpack with more slots and two weapon slots or a small weapon slot, the loot and contraband doesn't mean anything to us. We can find all that and then some on the base map.

[Lecruidant]

There is a "Gated" tunnel out near the desert. Its' right at a hill. And you can see down into it. This might be the entrance to 21. Just a theory

[ilymve]

Im a tarkov labs sweat so im definitely hyped for building 21 release

[anlouker]

actually you can unlock the chimera through dmz, the same way for the m13b, all you have to do is find it(aka loot from and enemy operator or a friend brings it in) and extract with it and its unlocked

[robertnapier]

I unlocked the chimera via multiplayer. It was the easier method anyways. Velikan is returning. Wonder if he’ll actually speak this time. Those who may not remember mw19 season 5, Velikan unlike most other operators did not speak at all. His only dialogue was laughter each time he does a finishing move.

[honeybeeees]

*gets killed by a AQ soldier from 300 meters away with an apk for the 99th time*

"Hey, let's go to a worse, more dangerous area"

[SteadyGamin]

I somehow unlcoked this while I’m multiplayer. And also I now have the whole gun unlocked. I’m not sure if it was a glitch or what but I haven’t done this challenge.

[rjracing]

Why have I found blue access cards that are in different condition? Is B21 live?

[nahmate]

I’m very curious what kind of “high tier loot” could warrant all this extra work.

[CragsterSinging]

Building 21 is now live! 😄 a lot of loot, crazy AI, there are other operators, would love find out how many are in a match 🤔, there’s no mini map and exfil sites are elevators which only reveal themselves when you get close enough (I think within 20-30m)

[Shamano]

Be nice to see areas blocked with puzzles or other ways that don't involve just shooting