Lieutenant key rooms in Call of Duty: Modern Warfare 4 DMZ give you another chance at unique weapon variants, but reaching the door takes more than knowing the building. Jin-Tae's lounge requires a working elevator, while Roze's armory sits on Floor 14. Across Hajin, nine Lieutenants have associated locked rooms; the Scavenger has none. Pick your target using the weapon table below, then follow the access instructions so you spend less time searching the wrong floor.
Where are all Lieutenant key rooms in MW4 DMZ?
The nine rooms below each have an associated weapon variant. Treat these as possible rewards when choosing which Lieutenant to hunt, rather than a guaranteed shopping list.
| Possible variant | Base weapon | Lieutenant | Key room destination |
|---|---|---|---|
| Highroller's Fortune | ISO Nightshade SMG | Jin-Tae | Private Lounge, Heavenly Luck Casino penthouse, Cheongun Village |
| The Kraken | Astaroth .57 Sniper Rifle | Roze | Highrise Armory, Floor 14 on the eastern side of Netshin Tech Complex, The Grid |
| Doctor's Salvo | Patriot XMR Assault Rifle | The Doctor | Command Office, Floor 7 of Mirae General Hospital, near offices 701 to 712 |
| Dreadnought | Type 73 LMG | Bale | Supreme Leader's Bunker, beneath Admin Complex No. 2 at Chang-san Air Base |
| Paektu | Hyeon Burst Assault Rifle | Jang-ui | Converted Power Room, lowest floor of NuriGO Mall, near the K9 Unit course |
| Incisor | MAR-9 Marksman Rifle | Gorani | Scout Overlook, top of the Rice Mill in Imjin Farmland |
| Widow Maker | Warlord Shotgun | Iskra | Control Room, top floor of the transmitter building at Cheongwang Peak Array |
| Chemical Reaction | Kastov 762 Assault Rifle | The Chemist | Secure Armory, opposite the boathouse in northern Hanuel Nuclear Reactor |
| Incarcerator | X-58 Nyx SMG | Warden | Kang's Arms Incinerator, central area of the 14th Political Prison |
A Lieutenant's encounter location and key room can be different. Bale, for example, is found at the Re-Education Center, but his access card opens a bunker at Chang-san Air Base. Plan both stops before committing to the hunt.
How do you find Lieutenants and get their keys?
Reveal the target before searching for the room
You can buy Lieutenant intel through the Boss Board at the FOB, although some intel purchases require you to complete specific DMZ chapters first. Alternatively, Lieutenant Hunt Towers reveal the nearest Lieutenant's location.
For encounter locations before you chase a room key, use the DMZ Commander and Lieutenant locations guide. This is especially helpful for targets such as Roze and Jang-ui, whose rooms are elsewhere.
Check the defeated Lieutenant's loot
After defeating your target, inspect the dropped loot for the matching key or access card. Lieutenants can also drop their unique weapons directly, so check for both the weapon and the room-access item before leaving.
Once you have the key, follow its owner's room route below. Jin-Tae's Private Lounge Key leads to a penthouse, while Jang-ui's Converted Power Room Key takes you to the lowest floor of a mall. The key name alone will not tell you every access step.
Moden Warfare 4 DMZ Guide: All Lieutenant Key Rooms Locations
Which rooms need an elevator or a specific floor?
Jin-Tae
Take Jin-Tae's Private Lounge Key to Heavenly Luck Casino in Cheongun Village. The destination is the penthouse lounge, but your first stop inside the casino is the parking garage.
- Go down to the casino's parking garage.
- Find and activate the generator to restore power.
- Take the elevator to the penthouse.
- Unlock Jin-Tae's Private Lounge and search its loot.
The lounge can contain Highroller's Fortune, the ISO Nightshade SMG variant. Jin-Tae is also encountered at Heavenly Luck Casino, making this one of the hunts where the boss and room share the same landmark.
Moden Warfare 4 DMZ Guide: All Lieutenant Key Rooms Locations
If you are tracking additional DMZ keys, keep the Counting Room Vault Key location guide handy for a separate loot objective.
Roze
Roze's Highrise Armory Key opens the armory on Floor 14 of Netshin Tech Complex in The Grid. Search the eastern side of the complex at that floor, then use the key at the locked armory.
The possible reward is The Kraken, an Astaroth .57 Sniper Rifle variant. Roze's encounter location is DBN Headquarters, so collecting her key and opening the armory require different destinations.
The Doctor
Bring The Doctor's Command Office Key to Mirae General Hospital and reach Floor 7. Look around the offices numbered 701 to 712 for the locked command office.
That office can contain Doctor's Salvo, a Patriot XMR Assault Rifle variant. Use the office numbers to narrow your search once you reach the correct floor, rather than checking the rest of the hospital.
Where are the underground Lieutenant rooms?
Bale
Use the Supreme Leader's Bunker Access Card at Chang-san Air Base. The bunker lies underneath Admin Complex No. 2, so searching the building's surface-level offices will leave you above your destination.
Reach the underground bunker and use Bale's card to enter. Its associated weapon is Dreadnought, a Type 73 LMG variant. Remember that Bale himself is found at the Re-Education Center, not at this bunker.
Jang-ui
Jang-ui's Converted Power Room Key belongs at NuriGO Mall. Go to the lowest floor and locate the generator room near the K9 Unit course, then unlock the restricted room.
The room can hold Paektu, a Hyeon Burst Assault Rifle variant. Jang-ui is encountered at Netshin Tech Complex, so head to the mall after collecting the key rather than continuing to search the complex.
Moden Warfare 4 DMZ Guide: All Lieutenant Key Rooms Locations
Where are the other Lieutenant key rooms?
Gorani
Take Gorani's Scout Overlook Key to the Rice Mill in Imjin Farmland. Your destination is on top of the mill, so work toward its upper section rather than searching the ground-floor rooms.
The overlook can contain Incisor, a MAR-9 Marksman Rifle variant. Gorani's encounter location is Mujin Pass, which makes the Rice Mill a separate stop after the fight.
Iskra
Iskra's Control Room Key opens a room inside the transmitter building at Cheongwang Peak Array. Enter that building and climb to the top floor to find the restricted control room.
Search inside for a chance at Widow Maker, the Warlord Shotgun variant. Cheongwang Peak Array is also Iskra's encounter location, but you still need to reach the transmitter building's uppermost floor to use her key.
The Chemist
Bring The Chemist's Secure Armory Key to the northern section of Hanuel Nuclear Reactor. Locate the boathouse, then look opposite it for the restricted armory.
The armory's associated variant is Chemical Reaction, based on the Kastov 762 Assault Rifle. The Chemist is encountered in the reactor's Radiation Zone; the room itself is identified by its position opposite the northern boathouse.
Warden
The Warden's room is Kang's Arms Incinerator, in the central area of the 14th Political Prison. Check the Warden's dropped loot for room access, then head to the incinerator rather than searching the prison's outer sections.
Inside, you have a chance to find Incarcerator, an X-58 Nyx SMG variant. The Warden's encounter location is The Citadel, so the prison is your room destination after obtaining access.
Does the Scavenger have a Lieutenant key room?
Scavenger (Krueger) has no dedicated key room. His unique weapon is Revenant, an Oris 8.6 Marksman Rifle variant, so focus on his dropped loot rather than looking for a second locked location.
The Scavenger appears at random locations near dead players. Lieutenant Hunt Towers can help reveal him, but remember that each tower reveals the nearest Lieutenant.
How should you plan a Lieutenant weapon run?
Choose the variant first, then build the run around its Lieutenant and room. The Kraken means hunting Roze and reaching Netshin Tech Complex's Floor 14 armory; Highroller's Fortune means accounting for the casino generator and penthouse elevator.
- Identify the Lieutenant tied to your desired variant.
- Find the target using intel, a Hunt Tower, or the encounter location.
- Inspect the defeated Lieutenant's loot for the weapon and access item.
- Travel to the matching room and follow its floor or power requirements.
- Once you secure the weapon, avoid unnecessary fights and prioritize extraction.
If Dreadnought or another target variant is missing, a correct key and room visit can still have produced a different loot result. Repeat the corresponding hunt rather than switching to an unrelated Lieutenant room.
After securing your Lieutenant loot, plan your next DMZ key hunt with the Gun Store Weapons Locker locations guide.
