For players who want a real challenge and a memorable run, the Tank Dempsey Easter Egg on Firebase Z is one of the most intense experiences in BO7 Zombies. This multi-stage event mixes combat, puzzle steps, and a dramatic final phase, and it rewards teams that can stay calm under pressure. If you want to practice parts of the sequence or learn the timing without the stress of live lobbies, using a CoD BO7 Bot Lobby can help you rehearse specific steps and refine your approach.

Start by picking Dempsey as your character for the run. The Easter Egg only triggers when you play as Dempsey, so choose him at the loadout screen and stick with that choice for the whole attempt. After that, head for the crashed rocket on the map. Near the rocket you will find a small pile of bodies and a dog tag on the ground. Interact with the dog tag to kick off the event. That first interaction is the spark that sets the whole sequence in motion, and it will send a black wisp to lead you to the next steps.

Follow the black wisp and be ready for waves of zombies and special enemies. The wisp points you to several map locations where trials will spawn. At each location you must survive rounds of heavy foes and complete short tasks under pressure. Expect to face “heavy” enemies that hit hard and move slow, and be ready to switch to crowd control or high-damage weapons when they spawn.

Watch the event cues and work fast when the trials end. Many steps force you to interact with map objects, trigger short cutscenes, or protect terminals while waves spawn. Keep an eye on audio and visual cues from the wisp and the environment so you do not miss an interaction. Use perk loadouts and Ammo Mods that fit sustained fights, and keep a backup of mobility options like the Combat Bow or movement augments so you can kite when needed. Conserving armor and a few healing items makes the middle stages smoother.

The final phase flips the script: you will transform into the Elder Disciple form as part of the climax. In that phase you fight with altered abilities and new rules, so you must adapt quickly. The Elder Disciple step changes your damage profile and your movement options, and the encounter mixes boss-style threats with constant swarms. Practice the Elder Disciple form separately so you learn its cooldowns, best combos, and how to stay alive when the map gets crowded.

If you want to drill any part of the event, run controlled sessions in a BO7 Bot Lobbies to isolate hard steps. Use the Bot Lobby to practice the dog tag interaction, the wisp paths, and the Elder Disciple playstyle without the added chaos of human opponents or random spawns. The Bot Lobby is also useful for testing loadouts and learning how heavy enemies behave so you can plan who brings which weapon and which perk.

When you hit the major interactions in a real run, move with purpose and talk to your team. Clear a safe space before you interact with key objects and plan escape routes after each interaction. Use the map’s tight corridors to funnel zombies, and open larger spaces only when the team can handle the wave.