Military Tunnels is the underground three-card endgame — green, then blue, then red — and it holds the densest scientist roster of any monument in Rust. It is also the monument with the widest disagreement between guides: scientist counts range from 15 to 33, and fuse counts and elite crate counts differ too. This guide reports those as ranges rather than pretending one is authoritative.
What every source agrees on: it is a Tier 3 monument, it needs all three cards, the corridors are pitch black, and the scientists are the threat — not the radiation.
What to bring
| Bring | Why |
|---|---|
| Green + blue + red keycard | All three are required for the full puzzle |
| 2 electric fuses | Sources disagree on 1 vs 2 — bring two |
| Flashlight | The corridors are pitch black |
| A Workbench 2 rifle and 150+ rounds | LR-300 or AK for the corridor fights |
| 8–10 medkits plus bandages | Multiple forced engagements |
| Radiation protection | A hazmat suit covers everything comfortably |
| Rad pills or Anti-Rad Tea | For sustained time in the deepest sections |
The puzzle, in order
- Enter at the main entrance and take the right door into the armory tunnel.
- Insert the fuse and flip the timer switch beside it. This starts a timer of roughly 2–3 minutes, and it is the clock you are racing for the rest of the run.
- Down the main tunnel corridor — expect scientist activity. The tunnel narrows as you approach the chain-link fence.
- Chain-link fence section — the most dangerous encounter in the monument, because multiple scientists converge there. Do not peek too long; use cover and pull them one or two at a time.
- Green door storage area — swipe your green card on the storage door to your left, find the switch inside and flip it.
- Red container — holds the elite crates, the most valuable loot in the monument. Scientists actively defend it.
- Laboratory blue door — swipe your blue card, then push through to the red door ahead.
- Red door — the final loot chamber, with the elite crates.
- Spiral staircase exit — ascend and get out.
The exit is one-way. After looting the red room, take the quick exit on your left rather than backtracking. Backtracking means re-clearing scientists and risking the timer resealing doors behind you.
Radiation is mild here — spend your budget elsewhere
| Monument | Radiation |
|---|---|
| Military Tunnels | median ~11, max ~26 |
| Airfield | 11 |
| Launch Site | ~51 |
| Missile Silo | ~81 |
A hazmat suit at 50% covers the entire complex comfortably, and even a 25% road-sign kit is enough for most of it. The practical takeaway: do not wear a hazmat in a fight — it has no armour value. Put it on for clearing NPCs, take it off before PvP.
Drinking water removes radiation, and Rad Pills and Anti-Rad Tea remove it instantly. Water is slower but free.
Fighting 30 scientists in corridors
The tunnels are the densest scientist population in the game. What works:
- Corner-pull. Drag scientists out one or two at a time around corners. Do not fight in the open central halls.
- Use audio. Solo players should track positions by sound in the dark.
- Duo or trio is far safer. One player holds the corridor while the other loots.
- Move fast. A full clear should take under about 8 minutes, or the respawns catch you.
If you go solo, an experienced player with an AK clears it in roughly 6–8 minutes. For most, a duo or trio is the right call.
Loot
Reported container counts vary by source, but the shape is consistent — the value is in the elite crates behind the red door plus the on-site recycler:
| Container | Count (beancan.gg, from game files) |
|---|---|
| Military Crate | 7 |
| Elite Crate | 6 |
| Normal Crate | 7 |
| Blue Barrel | 8 |
| Yellow Barrel | 6 |
| Food Crate | 1 |
| Medical Crate | 1 |
Reported elite crate counts across sources range from 2 to 6. The complex also yields Diesel Fuel collectables and Advanced Blueprint Fragments from the endgame loot pool, and around 292 scrap for a full clear by one account.
Use the recycler on the way out. Military Tunnels produces a lot of components, and turning them into scrap at the entrance is what makes the run efficient.
Common mistakes
- Forgetting the flashlight — you will walk into scientists in the dark.
- Fighting in the open central rooms instead of pulling around corners.
- Backtracking through the complex instead of taking the one-way exit.
- Clearing it at prime time — the tunnels attract PvP groups waiting for pre-packed loot.
- Wearing a hazmat during a PvP fight, where it gives you nothing.
- Arriving without a red card, which you cannot buy — it is loot-only.
Related guides
- Launch Site Guide — the comparable above-ground Tier 3
- Oil Rig Guide — the offshore option
- Best Early Game Weapons — what to bring
- Monument Loot Tables — crate contents across monuments