Key Features
Open the bunker and choose an escape route
- The ground-floor starting room connects to the Help room through the marked door. Buy that door for access to the fixed Mystery Box. The stairs in Spawn and Help both reach the same upper room; opening both completes a loop but also gives zombies two ways upstairs. Agree on which staircase to leave closed if camping.
- The Box remains in the Help room, with BO1 weapons including the Thundergun and Ray Gun. The old WWII wall weapons remain around the bunker. Monkey Bombs buy a brief escape window, but throw them onto reachable floor so the distraction works.
radio on the table - Upstairs, the cabinet above the Box room sells a scoped Kar98k for 1,500 points. It is an ordinary purchase, not the start of a hidden upgrade quest. Its slow handling makes it a poor panic weapon in the tight stairways.
cabinet on the second floor - There is no power switch or Pack-a-Punch. Updated BO1 adds Mule Kick for a third weapon, but there is no Jugger-Nog, Quick Revive or Wunderfizz here. A third weapon does not give extra health or a solo revive.
Move safely between the three rooms
- Rebuild a few boards while the first zombies are still outside, but watch the other windows rather than staring at one barrier. Carry a loaded weapon for travel; begin a reload before climbing a staircase, not while a zombie is blocking its exit.
- For an upstairs hold, teammates watch separate approaches and announce reloads. Once both staircases are open, use the entire loop instead of backing into the cabinet corner. Solo training is cramped: walk past a compact group only when the next room has an open exit.
- Reload before collecting Max Ammo and tell teammates before taking it. Use Insta-Kill to conserve ammunition, but avoid lunging into a group with the knife. An unreachable drop is rarely worth losing the run.
Side Quests
Mystery Box radio
- Shoot or melee the small radio on the table beside the Mystery Box. It starts a track; damage it again to skip to another. This is a music interaction and does not unlock a room, weapon or ending.
radio on the table
Undone: the three outside barrels
- Shoot these three explosive barrels through the ground-floor windows: the barrel outside the window by the Spawn staircase, the one beyond the far corner window diagonally across from Mule Kick, and the one near the truck outside the window nearest Mule Kick. Check the three photographs for the sightlines. The third explosion starts Undone.
Outside window beside stairs Outside window in back corner (window diagional from Mule Kick) Outside window closest to Mule Kick, beside the Truck
Sources and review
Written for Black Ops (2010), with its title updates; mobile editions and modded maps can differ. Community guides and illustrated references were cross-checked on 3 October 2026. Gameplay: Activision / Treyarch; photographs: the credited community authors below. Reused photographs may show a remaster of the same location; the instructions describe this edition. Source review and software checks are not an in-game playthrough.
Select any reference image to enlarge it. Screenshot and symbol sources are credited in the linked walkthroughs; this guide uses local copies for reliable access.