Navigating the shifting corridors of the Federal Bureau of Control requires a mix of supernatural power and careful observation. This walkthrough covers the primary path Jesse Faden must take to uncover the mystery of her brother and the Hiss invasion. Whether stuck on a specific sector elevator or struggling with the HRA punch card puzzle, the following steps provide a clear route to the credits.

Essential survival strategies before starting

Success in the Oldest House depends on mastering the movement-heavy combat system. Unlike traditional shooters, staying behind cover is often a death sentence because Hiss enemies flank aggressively and some explode upon contact. The primary focus should be on the Launch ability. It is widely considered the most powerful tool in Jesse’s arsenal, capable of breaking shields and dealing massive damage even when the Service Weapon is recharging.

Health does not regenerate automatically. To heal, Jesse must collect blue health elements dropped by damaged or killed enemies. This design encourages an aggressive playstyle—moving toward the danger to sustain life. Prioritizing health and energy upgrades in the early game provides a much-needed buffer during the first few boss encounters.

Mission 1: Welcome to the Oldest House

The journey begins in the Executive Sector. After the opening cinematic, move through the lobby and follow the path toward the Director's Office. There are no enemies yet, so use this time to get used to the movement. Upon finding Director Trench, pick up the Service Weapon to enter the Astral Plane. This is a basic tutorial; follow the prompts to shoot and melee the constructs. Once back in the real world, the building enters lockdown. Follow the signs to Central Executive, cleanse the first Control Point, and meet Emily Pope.

Mission 2: Unknown Caller

After speaking with Emily, the goal is to find the Communications Department and the Hotline Object of Power. Head to the mailroom area where the first major encounter with Hiss Guards occurs. Use the Service Weapon (Grip form) to pick off enemies from a distance. In the mailroom, a Hiss-corrupted Tommasi will appear. Do not stay stationary; his projectiles deal heavy damage. After the fight, proceed to the Hotline Chamber. Pull the light cord three times to enter the Oceanview Motel. To progress, ring the bell at the front desk until the last door opens, then pick up the key. Once Jesse reaches the Hotline, a long dialogue sequence follows, explaining the Director's role.

Mission 3: Directorial Override

This mission takes Jesse to the Maintenance Sector to lift the internal lockdown. First, find Ahti the Janitor. His office is located past the Ventilation area. Ahti provides a Level 2 Clearance card and a task: fix the NSC Power Plant.

There are two main objectives here: fixing the Coolant Pumps and the Energy Converters.

  • Coolant Pumps: Head to the pump room and look for the glowing yellow batteries. Use Launch to slot them into the power sockets. You will encounter a growth known as the Clog; shoot or throw objects at its glowing yellow eyes to clear the pipes.
  • Energy Converters: Similar to the pumps, use Launch to place batteries into the power units around the large central chamber. Once both are fixed, return to the NSC Control Room to lift the lockdown. This opens up the Sector Elevator for full travel.

Mission 4: Old Boys' Club

Jesse must now find Casper Darling’s specialist, Helen Marshall, in the Research Sector. Head to the Parapsychology area. The path is blocked by Hiss resonance, requiring Jesse to cleanse several points. Eventually, Jesse reaches the HRA Lab.

The HRA Punch Card Puzzle Solution

This is one of the most frequent points where players get stuck. To restart the HRA machine, Jesse must insert five punch cards into five specific terminals. The clues are on the whiteboards in the room, but the solution is as follows:

  1. Terminal 1 (Bottom left): The card with the symbol that looks like a filled-in square with a line.
  2. Terminal 2 (Top left): The card with the four-leaf clover-like symbol.
  3. Terminal 3 (Top right): The card with the symbol resembling a staircase/zig-zag.
  4. Terminal 4 (Bottom right): The card with the simple square outline.
  5. Terminal 5 (Middle): The card with the symbol that looks like a stylized 'F'.

Once the machine starts, Jesse meets Marshall and learns about the need for Black Rock Prisms.

Mission 5: Threshold

To find the prisms, head to the Black Rock Processing area in the Maintenance Sector. This involves navigating the Atlas Chamber and the Black Rock Quarry. In the Quarry, Jesse will see massive floating rocks and Hiss-corrupted miners. Use Levitate (if unlocked via the 'A Matter of Time' side quest, though not mandatory for this path) or careful jumping to reach the prism laboratory. A major fight occurs here against a Hiss Elevated. These enemies dodge projectiles, so try to throw objects when they are distracted or mid-attack.

Mission 6: My Brother's Keeper

Now Jesse heads to the Containment Sector to find the Panopticon, where her brother Dylan is held. Speak to Langston at the entrance. The Panopticon is a massive multi-level prison for Altered Items. Head to the fourth floor. Jesse must battle Salvador, the security chief. He uses a shield of debris; the best tactic is to use Launch to break the shield and then quickly follow up with Service Weapon fire. After defeating him, Jesse cleanses the Benicoff TV and gains the Levitate ability (if not already acquired), which is essential for reaching the upper levels of the Panopticon to find Dylan.

Mission 7: The Face of the Enemy

Dylan is now in custody, but Jesse needs to investigate the Ordinary AWE site to find the Slide Projector. Go to the Program Research area in the Containment Sector. This leads to the Prime Candidate Program. Explore the rooms labeled P6 and P7. Eventually, Jesse must travel through the transit tunnels to reach the Ordinary AWE area, which is a massive recreation of a small-town street inside a cave. Fight through the Hiss waves and interact with the projector site. It is revealed that the projector is gone, taken by the Bureau years ago.

Mission 8: Finnish Tango

Jesse needs to find Ahti again to learn how to bypass the Ashtray Maze. He is in the Maintenance Sector, but the path requires navigating the "Clog" again in a new location. Ahti gives Jesse his walkman, which allows the shifting walls of the maze to synchronize with the music.

Navigating the Ashtray Maze

With Ahti’s walkman, simply run through the maze. The walls will open automatically as the music ("Take Control" by Old Gods of Asgard) plays. This is a linear combat gauntlet. Do not stop moving. Use Levitate to cross gaps and Launch to handle the heavy Hiss units that spawn. The music acts as a guide; as long as it is playing loudly, Jesse is on the right path. At the end, Jesse reaches the Dimensional Research area.

Mission 9: Polaris

In Dimensional Research, Jesse finds the giant Hedron chamber. To reach it, Jesse must cleanse several large siphons located on high platforms. This is a platforming-heavy combat encounter. Use Levitate to move between the three main tiers. Each tier has a siphon protected by Hiss clusters. After all siphons are cleansed, a major cutscene occurs, and the screen turns red as the Hiss seemingly wins.

Mission 10: Take Control

The final mission begins with a surreal sequence where Jesse acts as an office assistant. Repeat the mundane tasks (delivering mail, clearing coffee cups) until the Director's office opens. Eventually, Jesse breaks free from the Hiss influence. The final goal is to reach the Slide Projector in the Executive Sector. The building is in a state of total chaos. Jesse must fight through the "Nostalgia Department" and several waves of high-level Hiss. There is no traditional boss at the end; instead, it is a test of using every ability Jesse has learned. Reach the projector and interact with it to end the Hiss resonance and take her place as the true Director.

Recommended Service Weapon Forms

While players can carry two forms at once, some are objectively more versatile than others for a first playthrough:

  • Grip: The reliable pistol. With high-level damage mods, it is effective at almost any range.
  • Shatter: The shotgun. Essential for dealing with Hiss Charged (the ones that rush you) and for close-quarters fighting in the Maintenance Sector.
  • Pierce: A railgun-style sniper. It penetrates walls and shields, making it perfect for the Hiss Elevated enemies who like to hover in the distance.
  • Spin: A high-rate-of-fire SMG. Useful for suppressing fire but often suffers from low accuracy. It is recommended to stick with Grip or Pierce for better energy-to-damage ratios.

Vital Ability Upgrades

As Jesse earns Ability Points from missions and hidden locations, she should invest in the following order:

  1. Launch Damage: Leveling this up allows Jesse to one-shot basic Hiss and significantly weaken armored ones.
  2. Health: Increasing the pool ensures Jesse doesn't die from a single stray rocket.
  3. Levitate: While acquired mid-game, upgrading its duration is key for the final missions and for finding secret areas containing high-level mods.
  4. Seize: Not vital, but seizing a Hiss Medic can turn the tide of a difficult battle by providing constant healing to Jesse.

Post-Game and DLC

After the credits roll, the Oldest House remains open for exploration. Jesse can clean up remaining side quests, such as fighting the hidden boss "Mold-1" or the "Anchor." If the Ultimate Edition is installed, two additional chapters are available:

  • The Foundation: Explores the origins of the Oldest House beneath the Maintenance Sector. It introduces new powers related to manipulating crystals.
  • AWE: Jesse investigates the Investigations Sector and encounters a darkness-based entity connected to the events in Bright Falls (Alan Wake). This DLC requires heavy use of light sources to burn away the darkness.

By following this path, Jesse Faden evolves from a confused outsider into a formidable Director capable of containing the most dangerous paranatural threats in the world. Patience with the map—which is intentionally confusing to reflect the building's nature—is as important as a quick trigger finger.