Military Tunnels

Scientists in the dark, all three keycards on your hip, and elite crates at the end of the rails.

At a glance

Puzzle: Red keycard
Cards needed
Fuses: 1
Rad protection: 25 rad protection
Recycler: No
Puzzle reward: Elite loot room (3 elite + 2 military + 2 normal)

Run the Military Tunnels puzzle → step-by-step · 10–15 min

Military Tunnels is the only monument that demands the complete chain — green, blue, and red cards on one belt — and defends its loot with the most aggressive scientist garrison on land.

Why you’re here

The richest guaranteed elite room of the classic monuments: three elite crates plus military and normal crates behind the final red door, with more elites on the rail car along the way. Every run is also a scientist fight, which means weapon and ammo drops on top of the crates.

The layout

A bunker complex burrowed into a mountain: surface guardhouses lead to rail tunnels, an armory, laboratories, and the final timed red door. Scientists patrol in squads and hear gunfire from rooms away — the route rewards deliberate clearing over sprinting. Radiation stays around the 25-protection band.

Route and circuit: Military Tunnels puzzle guide.

Loot worth the trip

3 elite, 2 military, 2 normal crates behind the red door
Elite crates on the center rail car mid-route
Scientist NPC fights throughout — bring real weapons