These steps were first showcased by Geeky Pastimes on YouTube, so we’ve posted his excellent recap of the steps below. If at any point our words fail you, feel free to give his version a look.

While the actual steps of this Easter egg aren’t as obtuse as something one might expect to see in Zombies, the true challenge of getting the Enigma Blueprint is completing the task without dying. Especially since the launch of Season 5 Stadium has become a massive hotspot, making it very difficult to go hunting for keycards while avoiding enemies at the same time. With this in mind, we suggest tackling the Stadium Easter egg in Plunder because it allows you opportunities to respawn. You should also have a Squad of competent players as well.

Warzone’s Stadium PoI is divided into three floors: the first floor parking garage area, the second floor concourse leading out of the main stadium and the third floor executive offices. Your goal is to find a glowing keycard on at least two of the three floors. They spawn randomly, don’t appear in boxes or Supply Drops and can also despawn quickly after appearing as well. The cards are labeled as follows:

Parking Garage: P2-16Concourse: CL-19Executive Offices: EL-21

Unfortunately, we can’t offer much of a guide for finding the keycards because they can spawn anywhere in the environment including mop buckets and even specific stadium seats in the outdoor area. Just keep your eyes open for anything that glows.

Each floor also has a specific location where its designated keycard must be used.

Parking Garage: In the garage area, you’ll see a big ramp leading upwards near a door with a blue sign that says “authorized persons only. " Take the P2-16 keycard there. Concourse: There’s a little bar area on this floor, and you’ll see a door in that room with the same blue sign. Use the CL-19 keycard here. Executive Offices: On the top floor, walk around the area till you see one suspicious door that doesn’t have a blue ribbon blocking it off. It’s right next to a door that is blocked off, near a trash can. Use the EL-21 keycard here.

In each of these rooms you’ll find a computer. Interact with it, and you’ll see a mix of eight symbols and letters flash across the screen. Make note of the code and share it with others in your Squad. The numbers in the code correspond to the final code that unlocks the Enigma Blueprint, while symbols have to be decoded by your Squad.

If, for example, your displayed code is “6, 4, nose, nose, house, one, nose, house” like it was in Geeky Pastime’s video, you know the 6, 4 and 1 are absolutely correct. Your squadmate, however, may see a code on their floor’s computer screen that reads, “chinese symbol, 4, 2, 2..” which tells you that the “nose” symbol in the code stands for two. So, with two keycards combined, your hypothetical numeric code would be “6, 4, 2, 2, house 1, 2, house.” At this point you could just guess what that “house” number is by process of elimination or look for a third keycard to find out for sure. Given how difficult this Easter egg is to complete without dying in the first place, we’d advise just using two cards.

With a nearly or fully complete code, look for a vending machine in the top executive area of the Stadium that leads to a room with “HCKP6I” written on the wall. Start entering the code at the closed double door on the right. Bruteforce the keypad code correctly, and you’ll get the Enigma Blueprint.

Call of Duty: Warzone is available now on PS4, Xbox One and PC.

What do you think of the new Stadium Easter egg based on these steps? Did you get the Enigma Blueprint? Tell us in the comments section!