Then,shoot a portal next to you and one through the doorthat sits barely ajar.
Go through the portal and thenfollow the available path through the openingin the wall.
Once in the test chamber,shoot a portal underneath the cube dispenserand then dispense a cube.
Either shoot the other color portal on the lower level ortake the cube down thereandplace it on the button.
Take the stairs andshoot the lower portal color onto the markingunderneath the vacuum tube.
This will take it to the next section, where you canplace it on the button and exit.
Continue along the path until you cango through a broken window, then take a right.
Go through it and thenfollow the path through the doorand into the energy field of the next test chamber.
Then,use the gel to run throughand launch yourself.
Once on that side,shoot the portal on the lower wallthere.
Go back through andturn the power on, which willopen the exit doors after a brief scene.
To get through the dark sections of the office, you cansimply follow their lights as you move.
Crouch through the air vent until you could fall through the ceilingon your left.
Continue walking up the stairs and wait for the scene to finish.
Once it has,one of the railings at the end will falland let you pass.
Continue to the wall in front of you,shooting one portal into itandthe other across the water.
Go through and out of the room.
Take the door andshoot a portal into the high wall on your sideof the gap.
Then,fall through another portal on the groundto launch.
ensure toremember the portal color on the slanted wall.
Go straight until you enter the conference room.
Shoota portal through the broken windowon the far right side andthe other on the wall in that room.
Go through and take a left to continue down the hallway.
Continue walking until you get to the Garbage Tube room.
Gothrough the circular doorandonto the elevatorto complete this section.
Vacuum Tube Gel Pipes
Once off the elevator, continue through the test chamber door.
Once the ball is on your side,place it in the receptacle.
Valve later hired the developers of that game and brought them on board for the development of Portal 2.
Launch yourself into the second area byrunning through the portaland thenhit the power switchto change the gel distribution.
Once coated,use the orange and blue gels to run and bounceacross the gap.
Once across, go up the stairs and through the energy field.
Go through the large metal doors andonto the yellow elevatorto end the section.
Vacuum Tube Gel Bending
Get off the elevator and walk into the next test chamber.
Next,stand on the buttonto coat the walkway with gel using the reverse vacuum.
Youmay need to step on and off the buttonto really coat the runway.
Once coated, use the runway and ramp to get across the gap.
Go through the energy field and get on the yellow square elevator at the end of the walkway.
Go through andstand on the button.
Once coated,shoot the opposite color on the slanted wallto launch yourself.
This will cause a chain reaction that will put you on the railing.
Once through the door, keep walking toget on the yellow elevator and finishthe section.
Once on top,continue using paint to coat the topof it.
When on the button,shoot the opposite color of the portal you used onto the coverunder the dispenser.
When you step off the button, this portal will disappear.
Take the cube and place it on the button.
After the cover moves,place a portal on it to receive a straight stream of white paint.
Once that’s finished,shoot a portal of one color near the edge.
Remove the cube from the button andshoot the opposite color under the original dispenser.
This will send the cube flying into the tractor beam.
Once the cube is above the section blocked by the energy field,drop it.
Then,jump down and place that cube on the red buttonin that area.
Once finished,use portals to get back on the second level.
Next,shoot one portal across from the tractor beamandthe other on the mid-level wall across the water.
Once it’s safe,use portals to take it back to the buttonyou were just standing on.
This will launch you across the large gap.
Continue walking until you get into a room with a large tube that you might jump into.
Then,press the small button to launch a cubeinto the bullseye portal and over to you.
This will make the light bridge disappear andlaunch you through the portals.
Once through the tube,press the small button to make a cube gothrough the same journey.
When it gets to you,place it on the button to fire up the exit.
