Office Level 2 vent route: reach Level 3 with a Gaseous Nest
Cross the flooded office, recover the Gaseous Nest, enter the upper vent, and open the Office Level 3 supply-room shortcut.
Original exploration route
- Your task
- Cross the flooded office, recover the Gaseous Nest, enter the upper vent, and open the Office Level 3 supply-room shortcut.
- What you can use
- Replaces an unsupported infirmary bypass with a source-backed Office Level 2 vent route, equipment checks, landmarks, recovery steps, and shortcut verification.
- Confirm access
- Enter vent
- Open shortcut
- Secure return
Show the vent as a progression route with an exit plan rather than a map-accurate shortcut. Source basis: the references listed on this page, checked for game version 1.4. These are planning checkpoints, not measured rankings or yes/no branches. Follow the linked tables and procedures for conditions, quantities and completion checks. Not to scale; not a game map.
This route starts on Office Sector Level 2 and ends in the Office Sector Level 3 supply room. It uses the flooded office, a movable Gaseous Nest, an overhead vent, and the broken Level 3 Access stairwell. The payoff is more than two anvils: opening the supply-room door creates a repeatable path into Level 3, where the story route continues toward Silo 3 and Alice Mayfield.
This is not an alternate entrance to the Security Sector. An older description for this URL referred to an infirmary and an Improvised Rope, but the cited routes do not support that path. The verified route below keeps the same public URL while solving the real Level 2 vent problem players encounter.
Route outcome
| Start | Required interaction | End state |
|---|---|---|
| Tram Plaza access on Office Level 2 | Cross electrified water without stepping in it | Reach the upper section of the flooded office |
| Office beside the flooded room | Package the Gaseous Nest | Carry the launch object back upstairs |
| Upper wall vent | Place the Nest and use its lift | Enter the Level 3 Access stairwell |
| Broken stairwell | Reuse the Nest to reach the upper landing | Reach the Level 3 supply room |
| Supply room | Open the normal door from inside | Permanent walking shortcut to Level 3 |
The route is successful only after the final door is open. Reaching the supply room but leaving without opening it means the next trip must repeat the vent and stairwell sequence.
Route diagram
Before leaving Tram Plaza
Bring enough empty inventory space to package the Gaseous Nest. The official wiki lists the Nest at weight 4. Carry it from the adjacent office to the vent; after using it to jump into the vent, leave it deployed until you unlock the stairwell door and return to retrieve it. Do not fill the last inventory slots with office loot before collecting it.
The flooded room contains electrified water. The source route crosses by moving over filing cabinets and other furniture after breaking a window. This is a movement puzzle, not a resistance check. If you drop into the water, return to the room entrance and reset the crossing rather than trying to finish from a bad position.
| Bring | Why |
|---|---|
| Free inventory capacity | Needed to package and carry the Gaseous Nest |
| A tool for breaking the window | Opens the furniture crossing into the flooded office |
| Food, water, and basic healing | The route continues into a new floor before the shortcut opens |
| A light source | Makes the vent and stairwell landing easier to read |
An Improvised Rope is not part of this verified route. The Nest provides the vertical movement at both required climbs.
Stage 1: reach the flooded office
- Enter Tram Plaza from the cafeteria and take the stairs on the right.
- Follow the sign toward reception and pass through the reception area.
- Turn right at the direction toward the Data Farm.
- Pass the lift marked for Silo 3 Access.
- Turn left toward the Residence Tram.
- Find the office with electrified water on the right.
- Break the window and use the filing cabinets and furniture as stepping points to reach the upper level.
Pause on the upper level and locate the adjacent office before dropping. The next objective is the Gaseous Nest in that office, not a general loot sweep.
Stage 2: recover the Nest and enter the vent
Drop through the roof into the neighboring office and package the Gaseous Nest in the corner. The official item description confirms that touching a deployed Nest launches a player a short distance upward. The launch does not cause fall damage when the player lands at the same level, but landing on a lower level can still hurt or break legs.
Carry the Nest back to the upper area of the flooded office. Place it beneath the upper vent, leaving enough horizontal room to land at the vent opening. Step onto the Nest, enter the vent, and continue until the route descends a ladder into the Level 3 Access stairwell.
Leave the Nest deployed beneath the vent while you crawl through. The route source has you unlock the stairwell door on the far side, return to the flooded office to package the Nest, and then carry it back into the stairwell. Do not try to package it before entering the vent: the launch is still needed to reach the opening.
Stage 3: turn the broken stairwell into a shortcut
After the vent and ladder, unlock the stairwell door. That door lets you recover the Nest and bring it into the stairwell. Place the Nest below the broken upper flight and use its launch to reach the top.
Follow the upper corridor to the Office Level 3 supply room. Two anvils are in this room according to the route source. More importantly, open the supply-room door from the inside. The open door changes future travel from a two-launch vent route into an ordinary walking route and gives you access to the Level 3 path.
Use this completion check before leaving:
| Check | Complete when |
|---|---|
| Supply room reached | Both anvils and the room layout are visible |
| Shortcut opened | The normal door can be used from the corridor side |
| Nest recovered | It is packaged or placed where you intentionally want it |
| Return path understood | You can walk back without repeating the flooded-room crossing |
What comes after Level 3 access
The vent route and the Keypad Hacker route solve different problems. This vent path gets you into Level 3 without claiming that you already have a hacker. From Level 3, the current Keypad Hacker guide sends the player toward Silo 3 and Alice Mayfield. Speaking with Alice, or collecting the relevant components, can unlock the first Keypad Hacker recipe.
The base Keypad Hacker opens Clearance Level 1 doors. The official wiki lists several Office Sector targets, including the Level 2 Security Checkpoint and offices near the Level 3 elevator. It later upgrades into the Tier 2 model, which handles Clearance Level 2 keypads. Do not confuse Office Level 2, which is a physical floor, with Clearance Level 2, which is a lock requirement.
Failure recovery
| Failure | Likely cause | Recovery |
|---|---|---|
| Cannot cross electrified water | Jump line starts from the wrong furniture | Return to the broken window and rebuild the route one landing at a time |
| Cannot reach the vent | Nest is too far from the wall or launch is misaligned | Repackage it and place it directly below the opening |
| Trapped below broken stairs | Nest is still deployed beneath the vent | Unlock the stairwell door, return to the Office Level 2 side, and package the Nest before the second launch |
| Reached Level 3 but route still feels temporary | Supply-room door remains closed | Open it from inside before looting farther rooms |
| Keypad will not open | Floor number was mistaken for clearance tier | Read the keypad tier and use the matching hacker |
The safe order is route first, loot second. Cross the water, secure the Nest, open the vent path, reuse the Nest in the stairwell, and open the supply-room door. Once that door is confirmed from both sides, the objective is complete.
Sources & References
The flooded-office, Gaseous Nest, vent, Level 3 stairwell, and supply-room sequence was checked against PC Gamer's current anvil route. Gaseous Nest behavior and Keypad Hacker door coverage were cross-checked on the official wiki.
Editorial contribution
Replaces an unsupported infirmary bypass with a source-backed Office Level 2 vent route, equipment checks, landmarks, recovery steps, and shortcut verification.
- pcgamer.com: abiotic factor anvil location →
- pcgamer.com: abiotic factor keypad hacker →
- abioticfactor.wiki.gg: Gaseous Nest →
- abioticfactor.wiki.gg: Keypad Hacker →
Sources support factual claims. Route choices, comparisons, and recovery guidance are editorial synthesis and may change with game updates.
Author
The editorial desk maintains source-backed Abiotic Factor route notes, item checks, and practical decision guides.
About our editorial team →