To build a bunker that survives its first raid, finish a small shell before buying luxury pieces. Inspect the plot, dig a navigable fallback, close every unintended surface route, leave one controlled lane, place a turret with a clear view, and keep coins for repair. Test at a manageable wave, then improve the first point that fails.
Step 1: inspect before spending
Stand at the bunker and turn a full circle. Find the obvious enemy approach, the hatch or door, uneven terrain, open sides, and the space below the structure. Then open the available menus and read the current block cards. Prices, names, durability, and unlocks can change; the live card is more reliable than a saved screenshot.
On current PC recordings, 2 selects digging, P opens blocks, 3 opens build items such as turrets, and E follows interaction prompts. These are observed PC bindings, not promises for mobile or console. Use the labels displayed by your current device and server.
Before buying, choose the main approach. It should be a lane the turret can see and a player can cover without leaving the bunker unguarded. Your first build is easier to diagnose when most pressure arrives from one direction.
Step 2: dig a usable fallback
Dig below the bunker until there is enough space to enter, turn, reload, and move back to the surface. Avoid a narrow shaft where the camera catches the wall or another player blocks the exit. If you are playing co-op, have every player walk the route before the raid.
Keep the access route obvious. A ladder or other access piece may be available in the current build menu; verify its placement and collision before relying on it. Never assume an object works as a door, ladder, or support because of its appearance alone.
The official description encourages underground hiding when danger rises. Treat the room as a fallback and regrouping area. Current walkthroughs also describe enemies that can dig or exploit openings, so a deeper room is not guaranteed protection.
Step 3: close the shell
Start with the cheapest adequate shell pieces currently available. Close direct paths to the protected bunker and inspect corners from both sides. A single character-width gap can matter more than the material used on the front wall.
Leave one deliberate entrance or choke instead of scattering open doors around the perimeter. The controlled route should be long enough for the turret and held guns to damage approaching Verities, but short enough that you can repair or retreat without a long run.
Build for function before symmetry. If one side borders difficult terrain while another faces the open approach, the walls do not need identical shapes. Complete the vulnerable route and preserve coins rather than copying the same expensive pattern everywhere.
Step 4: create the damage line
Place one turret where it sees the controlled approach. Look from the turret toward the lane and remove any block, lip, or decorative piece that covers the muzzle or the target area. Elevation can help over low cover, but it can also create a blind spot directly below the platform.
Stand slightly behind or beside the automated line with your held weapon. You need room to strafe, reload, and reach the repair point. Do not place so many objects around the firing position that movement becomes harder than the enemy wave.
Before the raid, equip both available gun slots if the current interface provides them. Community guides say raid loadouts lock after starting. Confirm that behavior in your session and make loadout changes during preparation rather than under pressure.
Step 5: walk the escape route
Begin at the firing line, move through the shell, enter the underground room, turn, and return. Repeat while imagining another player or a placed object in the corridor. Widen tight turns now. A route that works only when the bunker is empty often fails during a crowded raid.
Check that retreating does not require opening an unprotected side. If the same opening serves as enemy lane and player escape, plan where the turret covers it and how the team passes without blocking fire.
Keep important interactions reachable. The bunker-health display, raid control, repair prompt, and any result or end-raid UI should not be buried behind a new wall. UI locations may move with updates, so perform this access check every time the plot changes.
Step 6: test and repair
Start a manageable raid instead of skipping directly to later pressure. Watch three events: where the first enemy approaches, where the turret begins and stops firing, and which block receives the first repeated hit. That observation identifies the next useful purchase.
If enemies enter through an open path, close the path. If the turret stays idle, fix its angle. If the whole lane works but enemies survive, improve damage through Turrets or Guns. If one wall takes every hit, repair and strengthen that wall rather than adding unrelated space.
Use the current raid-ending flow before a likely wipe if you intend to bank progress. Public guides report an End Raid option, but settlement behavior is update-sensitive. Read the confirmation and result screen in your own client.
First bunker acceptance check
Common build failures
An unfinished large perimeter is weaker than a finished small one. Shrink the plan until every direct route is covered. A thick wall with a blind turret only delays the same failure; change the firing line. A deep underground maze adds no value if players cannot return in time to defend. Shorten and widen the useful path.
Spending to zero is another structural failure. The exact repair price changes with the current system, but a reserve lets you respond after the first test. Buy appearance and extra area after the shell, lane, fallback, and reserve all work.
Build FAQ
Do I have to dig before a raid?
Digging is part of the advertised bunker loop and gives you a fallback. A minimal navigable room is enough for the first test; it does not need to be large or decorative.
How many entrances should I leave?
Start with one controlled approach when the plot allows it. Additional routes demand additional coverage and repair attention, so add them only for a tested movement need.
Why is my turret not shooting?
Check line of sight, elevation, range, orientation, and whether a wall or terrain lip blocks targets. Use the current turret card for any range or control rules.
Sources checked
- Official building and underground description
- Current first-bunker walkthrough
- Current raid preparation walkthrough
The sequence is based on the official loop and current community observations. Confirm bindings, piece behavior, costs, durability, and raid settlement in the current client.