Haven’s Hollow Pied Piper Easter Egg Guide in COD Warzone

Step #1: Find & Shoot 3 Mouse Traps at the Mansion

For the first step of the Easter Egg, you will need to locate and shoot three different mousetraps scattered throughout the Mansion POI. These mousetraps appear in random spots that change every match. While the traps themselves are small and easy to miss, each one is marked by a slice of cheese that is much more visible. If you spot a piece of cheese, the mousetrap will be nearby.

Most mousetraps spawn around the main entrance of the Mansion, particularly in the room with the T-Rex skeleton. You can find them both upstairs and downstairs in this area, along with a few possible spawns in the nearby ground-floor rooms that connect to the main hall. Here are some of the possible spawn locations you should check inside the Mansion:

• Under the desk in the northwestern corner of the second floor
• Behind a plank of wood on the western side of the second floor
• Behind the boxes on the eastern side of the second floor
• Behind the bar on the second floor
• Beside the grandfather clock on the western stairwell
• Behind the cabinet in the far western room on the ground floor
• Behind the chair in the eastern room on the ground floor
• To the left of the server in the room accessible through the door on the far north side of the second floor

Once all three mousetraps have been destroyed, you will hear the sound of mice, signaling that the first step is complete.

Step #2: Power the Pied Piper Fountain

For the next step, make your way to the elevator shaft near the kitchen at the back of the Mansion. If you have played the Shattered Veil Zombies map before, this is the same elevator you opened to reach the Pack-a-Punch. Here, take the fuse that is sitting just behind the elevator by interacting with it.

Once you have the fuse, return to the front of the Mansion, head outside, and head into the small shed on the south side of the building. Inside the shed, you can slot the fuse into a second fusebox, which powers the Pied Piper Fountain located directly in front of the Mansion.

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Step #3: Play the Correct Tune to Open the Secret Lab

Now that the Pied Piper Fountain has been powered up, you will need to solve a quick puzzle. Dotted around the fountain are several circular panels which, when stood on, play a certain note. You will need to play three notes in quick succession. While the notes you need to play are shown on a paper note within the Mansion, you do not need to look at it for this step.

To complete this step, simply play the notes E, D, and C using the visual from the fountain’s statue as a guide. This is, in fact, the opening tune to Three Blind Mice. Once done correctly, the fountain will begin to rise, revealing a hidden secret bunker below.

Within this bunker, you can find several Legendary Chests, free Perks, and other loot. There is also a decontamination button that, when hit, will keep the lab safe from the gas for a short duration. If this is your first time entering the lab, you will also receive The Doc Weapon Charm and 4,000 XP.