Raven Rock is one of the most demanding maps in No More Room in Hell 2 because progression is built around locked areas, power restoration, security clearance, objective items, and escalating zombie attacks. Instead of simply fighting your way through the facility, your squad must solve several progression blockers before reaching the final Cargo Lift.
This walkthrough covers the complete Raven Rock route, including the B1 Blast Door, Red Keycard, Industrial Fuses, Substation Generator, Heavy Radio Transponder, and 4-minute Cargo Lift extraction.
Table of Contents
- ➜ Raven Rock Objective Checklist
- ➜ 1. How to Enter Raven Rock and Breach the Perimeter
- ➜ 2. How to Open the B1 Blast Door
- ➜ 3. Where to Find the Red Keycard
- ➜ 4. How to Override the Facility Lockdown
- ➜ 5. Where to Find the Industrial Fuses
- ➜ 6. How to Start the Substation Generator
- ➜ 7. How to Find and Carry the Heavy Radio Transponder
- ➜ 8. How to Complete the Cargo Lift Extraction
- ➜ Beginner Mistakes and Common Traps
- ➜ Raven Rock Route Summary
- ➜ Frequently Asked Questions
- ➜ Final Tips for Clearing Raven Rock
Raven Rock Objective Checklist
The Raven Rock progression can be broken down into eight major objectives:
- BREACH PERIMETER FENCE — Enter the facility perimeter and reach the bunker.
- RESTORE POWER TO MAIN BLAST DOOR — Activate the transformer breaker to power the B1 entrance.
- SECURE SECTOR A ACCESS — Find the Red Keycard and use it on the security reader.
- OVERRIDE FACILITY LOCKDOWN — Access the Sector B command terminal and disable the lockdown.
- REPAIR SUBSTATION POWER CIRCUIT — Find two Industrial Fuses and install them in the generator panel.
- START SUBSTATION GENERATOR — Start the generator and survive the resulting zombie pressure.
- TRANSPORT RADIO TRANSPONDER TO CARGO LIFT — Carry the Heavy Radio Transponder to the extraction platform.
- SURVIVE UNTIL CARGO LIFT EXTRACTION — Activate the Cargo Lift and survive the 4-minute holdout.
1. How to Enter Raven Rock and Breach the Perimeter
The first stage of Raven Rock takes place outside the main bunker entrance.
Follow the surface road toward the facility's perimeter checkpoint and look for the outer security gate and guard house.
Finding the Wire Cutters
The Wire Cutters can be useful for opening the locked chain-link perimeter gate.
In this run, they were found inside the exterior checkpoint guard house, on a desk/workbench.
Use the Wire Cutters on the chain lock at the perimeter gate to enter the motor pool area.
Once through the perimeter, continue across the motor pool and follow the main route into the reinforced concrete bunker entrance.
2. How to Open the B1 Blast Door
Eventually, the route leads to the massive B1 Blast Door.
The door initially appears to be unusable because its power supply is disabled. Simply trying to interact with the door won't solve the problem.
How to Restore Power
- Stand facing the sealed B1 Blast Door.
- Look for the nearby B1 Transformer Shed/Maintenance Room.
- Enter the room beside the blast door.
- Locate the wall-mounted electrical breaker panel.
- Activate Switch #3.
- Return to the blast door.
The restored electrical supply powers the blast door mechanism and allows your squad to continue into the facility.
3. Where to Find the Red Keycard
After passing through the B1 Blast Door, continue into Sector A.
The next major progression blocker is a security door requiring the Red Keycard.
Red Keycard Location
In this run, the Red Keycard was found in the Sector A administrative/security area, on a desk near the entry section.
If you don't find it immediately, search the surrounding:
- Administrative desks
- Office cubicles
- Security desks
- Shelves
- Nearby work areas
The important point is to search the entire Sector A area rather than relying on one specific desk location.
Using the Red Keycard
Once you've obtained the card, take it to the appropriate security reader and swipe it to unlock the next section.
This opens the route toward Sector B Command & Control.
4. How to Override the Facility Lockdown
Once Sector A access has been secured, continue toward the Sector B Command & Control area.
The facility lockdown prevents progression toward the lower maintenance and substation areas.
Override Procedure
Find the main command terminal inside Sector B and interact with it.
Select:
The terminal clears the facility lockdown and opens the security route toward the lower sections of Raven Rock.
Do You Need an Officer's Key?
No. The main progression route does not require an Officer's Key. The facility lockdown can be overridden through the Sector B command terminal.
Once the lockdown is cleared, continue downward toward the subterranean Sector C maintenance and substation areas.
5. Where to Find the Industrial Fuses
The next major blocker is the Substation Generator.
Before the generator can be started, you need two Industrial Fuses.
The fuses are located in the Sector C maintenance and utility areas.
Industrial Fuse #1
In this run, the first Industrial Fuse was found inside a supply container/shelf area in the upper Sector C maintenance section.
Industrial Fuse #2
The second fuse was found farther into the lower Sector C utility area, near the flooded passage and surrounding maintenance supplies.
If you don't find the fuses in exactly those locations, search:
- Maintenance rooms
- Supply crates
- Storage shelves
- Utility corridors
- Workshop areas
- Lower passageways
Installing the Fuses
Once both Industrial Fuses have been collected, return to the Substation Generator. Insert both fuses into the empty sockets on the generator's power panel.
You need both fuses before the generator can be activated.
6. How to Start the Substation Generator
After both Industrial Fuses have been installed, the generator becomes ready to start.
Interact with the generator starter mechanism and pull the starter cord.
Starting the Substation Generator creates a major noise event that attracts a large zombie attack. This is one of the most important moments to prepare for in Raven Rock.
Before Starting the Generator
Make sure your squad:
- Reloads all firearms.
- Heals wounded players.
- Has enough ammunition.
- Keeps melee weapons ready.
- Groups together instead of spreading across multiple rooms.
- Establishes defensible choke points.
- Has explosives available for emergency crowd control.
The generator area and surrounding corridors provide limited space, making it easy for runners to overwhelm an isolated player.
Best Generator Strategy
Don't immediately rush away after starting the generator. Instead, use the surrounding doorways and narrow corridors to funnel zombies toward your squad.
Once the immediate pressure is manageable, continue toward the newly powered lower sections and Sector D Silo.
7. How to Find and Carry the Heavy Radio Transponder
After restoring power, continue deeper into Raven Rock toward Sector D Silo.
The route descends through the large subterranean silo area, including spiral walkways leading toward Level -2.
Eventually, you'll find the Heavy Radio Transponder.
The transponder is a heavy objective item that must be physically carried to the Cargo Lift.
Heavy Radio Transponder Mechanics
Carrying the transponder changes how your character moves and fights.
- You Cannot Use Your Normal Firearms — The transponder occupies both hands, meaning your primary firearm is stowed while carrying it. You cannot aim or fire your normal weapons while holding the objective item.
- Sprinting Is Disabled — The heavy carry also prevents sprinting. This makes the transponder carrier considerably more vulnerable to runners and other fast zombies.
- You Can Shove/Kick — The carrier isn't completely defenseless. You can perform the available defensive shove/kick action while holding the transponder to create some space against nearby zombies.
- You Can Drop the Transponder — If the squad is overwhelmed, drop the transponder. Dropping it allows the carrier to immediately return to their firearms and fight normally. Once the threat has been cleared, pick the transponder back up and continue.
Best Transponder Strategy
Don't send the carrier through Raven Rock alone.
A better approach is:
- Assign one player as the transponder carrier.
- Have teammates clear the route ahead.
- Keep another player behind the carrier.
- Check corners before the carrier enters narrow corridors.
- Drop the transponder if the carrier becomes surrounded.
- Clear the immediate threat before continuing.
The transponder doesn't need to be carried quickly—it needs to be carried safely.
8. How to Complete the Cargo Lift Extraction
The final objective takes place at Raven Rock's large subterranean Cargo/Freight Elevator.
This is not a helicopter extraction.
Bring the Heavy Radio Transponder to the Cargo Lift platform and place it into the designated receiver.
How to Activate the Cargo Lift
- Carry the Heavy Radio Transponder onto the Cargo Lift platform.
- Place it into the receiver/dock.
- Find the nearby Cargo Lift control terminal.
- Activate the elevator.
- Prepare for the extraction holdout.
Once activated, the HUD displays a 4:00 countdown.
The team must survive until the Cargo Lift completes its extraction cycle. This is the final major combat sequence of the map.
Where Should You Defend?
The best approach is to control the access routes leading onto the elevator rather than chasing zombies into surrounding areas.
Use:
- Narrow ramps as choke points.
- Elevator entrances as defensive lines.
- Elevated positions when available.
- Shotguns for close-range pressure.
- Explosives when the horde becomes concentrated.
Save Your Explosives
Don't waste every grenade immediately after activating the elevator. Try to preserve some crowd-control equipment for the final portion of the four-minute holdout, when the pressure can become much harder to manage.
Stay Together
The biggest mistake during extraction is splitting up. If one player leaves the Cargo Lift to chase zombies, they can become isolated from the rest of the squad. Defend the extraction point instead.
When the countdown reaches zero, the Cargo Lift completes its extraction sequence and the surviving Responders can escape the facility.
Beginner Mistakes and Common Traps
1. Repeatedly Trying the B1 Blast Door
If the blast door won't open, don't assume it's bugged.
Solution: Find the nearby Transformer Shed and activate the required breaker.
2. Searching Only One Desk for the Red Keycard
The Red Keycard location shown in this guide should not be treated as a guaranteed static spawn.
Solution: Search the wider Sector A administrative and security area. Remember: Observed location in this run; spawns may vary across matches.
3. Looking for Only One Industrial Fuse
The generator requires two Industrial Fuses.
Solution: Search the Sector C maintenance and utility areas until both have been recovered.
4. Starting the Generator Without Preparing
The generator creates a major zombie attack.
Solution: Reload, heal, regroup, and establish defensive positions before starting it.
5. Carrying the Transponder Alone
The carrier can't sprint or use normal firearms.
Solution: Assign squadmates to escort the carrier and clear the route.
6. Refusing to Drop the Transponder
Trying to walk through a horde while carrying the objective item can get the entire squad into trouble.
Solution: Drop the transponder, switch back to your weapon, clear the immediate threat, and pick it up again.
7. Searching for a Helicopter
Raven Rock does not use an air extraction.
Solution: The final extraction is handled by the Cargo/Freight Elevator deep inside the facility.
Raven Rock Route Summary
The overall route is:
The important progression chain is:
If your squad remembers that sequence, most of Raven Rock's progression blockers become much easier to understand.
Frequently Asked Questions
How do you open the B1 Blast Door in Raven Rock?
Enter the nearby B1 Transformer Shed/Maintenance Room and activate the required breaker, including Switch #3 on the wall panel. This restores power to the blast door.
Where is the Red Keycard in Raven Rock?
The Red Keycard was found in the Sector A administrative/security area in this run. Item spawns may vary, so search nearby desks, cubicles, and security areas if it isn't in the same location.
How many Industrial Fuses are needed in Raven Rock?
You need two Industrial Fuses to repair the Substation Generator power circuit.
Where are the Industrial Fuses?
The two fuses can be found while searching the Sector C maintenance, supply, and utility areas. Their exact locations may vary between matches.
How do you override the Raven Rock facility lockdown?
Reach the Sector B Command & Control terminal and select OVERRIDE FACILITY LOCKDOWN.
Do you need an Officer's Key to progress through Raven Rock?
No. The main progression route uses the Sector B command terminal to override the facility lockdown.
Can you use weapons while carrying the Heavy Radio Transponder?
No. The transponder occupies both hands, preventing normal firearm use and disabling sprinting. You can still use the available defensive shove/kick action, or drop the item to re-equip your weapons.
How long is the Raven Rock Cargo Lift extraction?
The Cargo Lift holdout lasts 4 minutes after activation.
Is Raven Rock extraction a helicopter?
No. Raven Rock uses a subterranean Cargo/Freight Elevator for the final extraction.
What should you do before starting the Substation Generator?
Reload, heal, regroup, and establish defensive positions before starting the generator. The activation creates a major zombie attack.
Final Tips for Clearing Raven Rock
Raven Rock becomes much easier once your squad treats each objective as a preparation phase rather than rushing forward.
Before moving deeper into the facility:
- Find the required access item.
- Keep the squad together.
- Prepare for the next horde trigger.
- Don't split up unnecessarily.
- Assign a player to carry heavy objective items.
- Save explosives for dangerous holdouts.
- Treat the final Cargo Lift as a defensive objective rather than a race.
The biggest progression blockers are the B1 Blast Door, Red Keycard, Facility Lockdown, two Industrial Fuses, and Heavy Radio Transponder. Once those are handled, the remaining challenge is surviving the final four-minute Cargo Lift extraction.
Comments
Post a Comment