ThePortal 2mod,Portal: Revolution, has re-energized the community with game-sized content that offers several hours' worth of new challenges in a familiar world. Those who were able to make it through the first chapter will face formidable puzzles in the second.

This section is considerably shorter than Chapter One, with around half the levels. However, the challenge in the first three levels is considerably harder than the basic tests you completed while you were learning how to use the Portal Gun.

A screenshot from Portal: Revelution showing the player character looking into a square elevator with yellow rails and a light above it.

Conveyors And Ventilators Walkthrough

Once you go through the white door from the first chapter’s ending, continue walking until youget to a glass wall with a locked doorat the end. You’ll need towait for the robot to finish speakingbefore the door opens, and you cancontinue straight.

Continue walking until youget to a room with a monitor and a whiteboard.

A screenshot from Portal Revolution Chapter Two showing a large fan on the far side of the room, with turrets on the walkway in front of it

Press the red buttonnear the sliding doors and then continue through the offices, crouching when you’re given the prompt to do so. After you’ve passed through,go to the leftandfall through the holein the floor.

Continuewalking along the catwalkuntil you get to a door leading to more catwalks for you to walk on. Follow the path, and you’ll eventually enter a large room where you have towait for Stirling to talkbefore the door will unlock.

A screenshot from Portal Revolution showing the Bomb dispenser switch and platform.

Once the door unlocks,continue walkinguntil you see asmall red button to press. Wait for the elevator and then get on to automatically begin ascending.

Continue through the storage areaand the door to enter the room with the first puzzle.

A screenshot from Portal Revolutions howing the player character looking from an observation room into a testing area, with a portal on the wall opposite them.

When you enter,the fans will startand blow all the items in front of you into the abyss.Travel across and then down the walkwayto get a cube off the conveyor belt.

Carry it back upandplace it in the observance roomtoblock the laserin the small cubby. This turns off the fans, allowing you to pass.

A screenshot from Portal Revolution showing the player character holding a prism cube near a laser, with the orange portal seen lower in the distance

In the next area,continue walking until you get to the broken glasswith a hole in it.

Shoot a portal on the far concrete wallat the top of the steps andcontinue walking. Go behind the wall to avoid the turret’s lasersandpress the button.Travel throughthe orange portal.

A screenshot from Portal Revolution showing the player character looking at a tube elevator with a red-eyed camera watching them

Go down the stairs, into the side room, andhit the switchto turn on the fan.

This will send the turrets flying, so you can go back through the blue portal to get to the starting area.Shoot a blue portal in the concrete wallrevealed by the falling containers to pass.

Once through,jump off the wooden boardsinto the area belowto move into the next section.

Bombs Walkthrough

Once you load into the level,head through the chamber with the debristo the far door and thenimmediately take a hard leftbefore going up the ladder.

Once in the room,activate the ventilators before you dispense the cube, sending it into the area below.

Go back down the ladder,pick up the cube, thentake it back to the roomanduse it to block the laser. Go through theopened doorsandhop on the conveyor beltto take you to the blue energy field andthe door to the next area.

Continuethrough the desk areaand into the long hallway that leads to another room of office equipment.

Gothrough the next energy fieldandhit the ‘Override’ switchon the far wall. When the doors on your right open,go through them and the double doorsfurther down.

When you walk into the area with the switch,shoot a portal on the far wallopposite one of the windows andthen flip the switch.

After the first bomb, it will send a projectile through the portal that destroys windows.Shoot a blue portal behind the broken windowin the hallway you came from.

Destroy the other windowin that section and then go through the orange portal when it’s safe.

Go back into the area with the ‘Override’ switch andshoot a portal opposite the broken window. You can nowgo into the testingareaand shoot a portalopposite the broken window beside the test panel.

This will allow you toshoot a portal into the far wall in the middlearea, destroying the windowabove the one just demolished.

Then shoot a blue portal back in your area and go through to getback to the bomb dispenser area. Goback to the starting roomusing a hallway portal andshoot one into the middle area without dropping.

Go back into the room with the bomb dispenser and go through it to get into the middle area.

Walk to the back of the room and place a portal on the surface under the tube,sending a bomband exploding the tube.

Take the dropped cubeinto the testing area andplace it on the button.

Go through the door andshoot a portal opposite the upper window.

Wait for two bombs to go throughto break both windows, then use the previous portal method toget back to the ‘Override’ room.

Shoot a portalinto the room on the far rightyou revealed, and thenuse the orange portalto go through.

Follow the pathto enter a room with a computer and shutters over the windows.

Two Broken Tests Walkthrough

When you load into this area,press the big red buttonto open the shutters and the door.

Go down the stairs andshoot a portal on the wall to your rightbefore yougo through it.Spawn a cubeusing the button, drop down to get it, and thentake it back up with a portal.

Shoot a portal on the far wall near the laserorigin andtake the cube throughthe orange portal.

Place the cube on the buttonto the right to move the orange portal before yougo through your previously placed blueone. Shoot aportal on the platform to your rightand then go back through.

Next, shoot a portalwhere the laser is hitting the white wall, which should go to the port andcreate a light bridge.

Travel across it andspawn a prism cubebeforedroppingnext to the orange portalwith the cube.

Shoot a blue portal on theplatform with the storage cube dispenserandgo through.

You can use the prism toturn the laser into the blue portalbeforegoing through.

Shoot a portalon the platform where the light bridge extendsto, and then shoot theportal back to the laser endpointto create the bridge.

Go across and shoot a portalinto the wall through the small hole.

Go back through the orange portal and then shoot a blue portal back across to where you entered by the stairs. Then shoot the laserwhere the orange portal wasandcreate the light bridge.

Take the cube across,place it on the big red button, thenhop into the tractor beamto be carried to the next area.

When there,shoot a portal onto the floorto activate the sensor andopen the door. After that, go through the door andfollow the path to complete the section.

Surprise

This is not a puzzle like the other sections, as it just makes players walk a very short distance before getting on the elevator. Once boarded,you will listen to Stirlingbefore you’re loaded into Chapter Three.