Warzone’s Stadium is back with a bang in Black Ops 6 Season 5, and hidden inside is one of the most sought-after rewards: the Enigma Blueprint for the CR-56 AMAX. This sleek, powerful weapon skin isn’t just for show—it’s a mark of dedication, proving you’ve cracked one of the game’s trickiest Easter eggs. If you’re ready to claim it, here’s everything you need to know, step by step.

Step 1: Find the Keycards
The first hurdle is tracking down three keycards scattered across the Stadium. These aren’t handed to you—you’ll need to search high and low. The cards are labeled CL-19 (Ground Floor), EL-21 (Executive Level), and P2-16 (Parking Lot), and their spawns change every match. Don’t panic if you only find two; you can still solve the puzzle with some clever guessing.
Where to Look:
- CL-19: Check the trophy room, near vending machines, or the football field lounge.
- EL-21: Scout the red seating areas or alcoves on the top floor.
- P2-16: Sweep the parking garage stairwells or entrance.
Pro tip: Loot dead enemies—sometimes they’ve already done the legwork for you.
Step 2: Decode the Access Code
Each keycard unlocks a specific room with a terminal inside. Interact with it, and you’ll see an eight-symbol code—but here’s the catch: some characters are replaced by weird symbols (like a house, nose, or letter “T”). Your job is to compare the codes from at least two terminals to crack the pattern.
For example:
- Terminal 1 shows: HH6N4NN1
- Terminal 2 shows: HHC34NN1
- Terminal 3 shows: 7HCN4NN1
Notice how the symbols overlap? Here, H = 7, N = 3, and C = 6, giving you the full code: 77634331. Your code will differ, but the logic stays the same. If you’re missing a keycard, brute-forcing the last digit (trying 0–9) works too—just pray the zone doesn’t close in.
Step 3: Claim Your Reward
Head to the Executive Level’s south side, near the parking garage entrance. You’ll spot double doors with a keypad—input your solved code, and voilà! Inside awaits the Enigma Blueprint on a table, surrounded by legendary loot crates. Grab it, and the CR-56 AMAX skin is yours forever.
Extra Tips for Success
- Squad Up: More teammates mean more eyes for keycards and cover during decoding.
- Speed Matters: Land at Stadium early to beat other players to the punch.
- Note-Taking: Use your phone or paper to jot down symbols—it’s easy to mix them up mid-game.
Why Bother?
Beyond bragging rights, the Enigma Blueprint is a callback to Warzone’s OG Verdansk days, making it a must-have for collectors. Plus, the CR-56 AMAX remains a beast in mid-range combat, especially with this optimized loadout.




