The puzzles in the game-sizedPortal 2mod,Portal: Revolution, offer unique challenges that test your abilities over a decade after the original game. As you progress through the chapters, new elements that make the puzzles even harder are introduced.

If you hope to finish Chapter Three, you’ll need to be able to think on your toes and use the surrounding environment to your benefit. As the puzzles get more difficult, you get more options for how to solve them.

A screenshot from Portal Revolution showing the player character looking through a window pane without any glass

Outside Aperture Walkthrough

When you start,walk up the debrisand through the lobby to get through the white chamber door.Continue walking straightuntil you get to a railing that’s broken, allowing you todrop onto a nearby grated platform. Once down, continue along the pathinto an open roomon the right.

Shoot a blue portal through the small circular hole in the window and thenspawn a cubebeforestanding on the big red button. This will cause the cube to fall through, allowing you to place it on the big red button. Then,shoot a blue portal on the wallby the railing opposite where you came from.

A screenshot from Portal Revolution showing the player character aiming the portal gun at a blue portal from higher up.

Take the elevator up, walk to the edge, andshoot a portal into the far wallnear where you fell. Go through andfollow the hallwaysuntil you get to a room with a broken window and a monitor. Jumpthrough the empty window pane.

In the new test chamber, drop onto the lowest area andpick up the storage cube. Take the cube up two levels byshooting a blue portal on the next floorof white walls andjumping into the orange portalbelow. Once at the top,drop the cube on the button.

A screenshot from Portal Revolution showing a blue portal that has just spit out blue gel

Turn around, place ablue portal on the slanted wall, and thenjump through the orange portal againto get to the exit.

Basic Portal Flinging Walkthrough

Walk up the stairs and past the ‘One’ test sign tomake an orange portal spawnin front of you. Look up to your right to see a grated walkway andshoot a portal on the wall behindit. Gothrough the orange portalto stand on the grate.

Shoot ablue portal on the wall to your right,and thenjump into the orangeportal. Once across,press the button to spawn a cubeon the opposite side of the room. Place a blue portalabove the grated area again, get up there, and thenjump through the orange portalto launch yourself again.

A screenshot from Portal Revolution showing a cube landing after falling out of a dispenser

Pick up the cube, take it back through a blue portal, and thenplace it on the buttonbehind the orange one. Then,get back on the grated walkwayandshoot a portal high upon the wall on the opposite side of the room.

Once the blue portal is placed,jump through and get launchedto the floor next to the next testing area. Once inside,an orange portal will spawnas you walk in. Shoot a blue portal on the floor toget through the orangeportal, thenshoot a blue one on the ceilingabove that.

A screenshot from Portal Revolution showing an elevator as the player character enters it

Go back through the orangeportal andshoot a blue one under youbefore you land, keeping your momentum. In the next area, follow this same method byshooting a portal on the ceiling, goingthrough the orange, and thenshooting a blue portal underneaththemselves.

As you keep your momentum between the portals, try toshoot a blue one on the slanted platformbehind youwhen you go through the orange. This will carry you to the final exit and the elevator.

A screenshot from Portal Revolution showing the player character being launched to a grated surface over a large chasm

Repulsion Gels Walkthrough

Continue through the hallways to get into the next testing area.Shoot a portal on the walls above youto the left when you enter the room,launching yourself near the exitdoor. Once there,shoot a blue portal on the slanted wallon the other side. Goback in the orange portalto launch yourself.

Once across, press the button to send blue repulsion gel through the portal to where you’re standing. Then repeat the process to launch yourself from the slanted wallagain. This timeyou will bounceback to the far area, allowing you toget a cube.

Take the cube back to the starting area using the blue portal. When back, shoot a blue portal into the room with a button and broken window before youjump back into the orange portal with the cube.Place the cube on the buttonand thenlaunch yourself one more timeusing the walls above that room to get to the exit.

Gel Cleansing Fields Walkthrough

Walk through the testing area and the falling waterto the big and small buttonsin the middle of the room.Stand on the big buttonandpress the little button, which will activate the tractor beam and switch the water, respectfully.

Without moving from the button,shoot a blue portal on the lower part of the wallopposite the falling gel. This willbegin to pull gel into the portal, but you’ll need to switch the falling water at the right timeto get some through.

Once the gel has gone through the blue portal,turn around and shoot the farthest white wallabove the turrets andstep off the button. Thegoo will hit the turretsand cause them to bounce across the room. After that, use the same method tospray some on the middle platform.

Once the middle platform has been coated,shoot a blue portal on the grated areaabove the orange one beforegoing through. Shoota blue portal on the slanted walland thenjump through the orange portalto be launched and then bounce to the exit.

Continue into the next area andshoot a portal underneath the falling orange gelbefore walking through it and the rain. Pick up the cube andtake it back to the main lobbybeforeplacing it in the square holderin the middle.This will coat the cubewith orange gel.

Drop the cube on the slanted surfaceand hurry to the platform in the corner before it starts to rise. Walk across the higher level andthrough the exitto complete the section.

Propulsion Gels Walkthrough

In the next area, you’llwait at the malfunctioning dooruntil Stirling moves a wall on your right to let you pass. Continue through and into the test chamber,walking through the blue energy field. Once in the larger room,take a right and walk across the roomto spawn the orange portal.

When facing the orange portal,shoot a blue one on the wall to your leftand go through.Stand on the buttonand shoot a blue portalunderneath the falling orange gel. Once some gel has gone through,create a portal on the white wallto coat the floor with gel.

Once there’s enough gel, use it to build speed before you go through a blue portal. Once through, shoot a blue portal on the slanted wall before you go back through the orange one. This will send you flyingonto the middle platform, where you canspawn a cube.

Take the cube to the orange portalandplace it near the edgewithout allowing it to fall in. Go back through the energy field and create a blue portal in that room.Pick up the cubefrom the edge and pull it through before youplace it on the button.

Return to the large buttonthat dispenses goo anduse the same methodas before to coat the middle platform with the orange gel. You may need to do this a few times. Once finished,launch yourself againwith the slanted platform. This time,use your momentum to continue forwardand off the ramp.

Go through the door andget on the elevatorto complete this section.

Getting An Upgrade Walkthrough

Continue forward until you get a new test room, andshoot a blue portal on your leftto enter. Once in the room,pick up the storage cubefrom the water andtake it to the buttonthat controls the laser under the orange portal.

Walk to the other side of the room andshoot a blue portal across from the laser portwhile you’re standing on the rising platform. Jump across andpick up the Orange Portal Gunfrom the pedestal. Take it and peek over the slanted wall beforeshooting an orange portal on it.

Turn around andshoot a blue portal above the grated areanear the entrance room andgo through the already placed orangeportal. Once on the grated surface,place a blue portal on the groundbelow andjump through it to get launchedto the exit.

Get into the elevator until it breaks, and you’re forced toget off on a nearby railing. Continue along the path until you get to the next testing area andshoot a portal in the room belowandbeside youto get down. Once on the ground,shoot an orange portal next to youand thena blue one underneath.

Go through the blue portalto be launched out of the orange, allowing you toplace a blue portal on the far flooryou’ve been launched to see. Then, if you haven’t, go through the blue portal again and land near the orange.Shoot an orange portal on the bottom floorand jump through, allowinga new higher orange portalon the top floor.

Jumpthrough the blue portalto get to the top floor, thenshoot a blue portal through the fence. Go through and follow the path up some stairs to a slanted wall. Place theblue portal on the slanted walland go through. Place theorange portal on the floorunderneath andjump through.

Continue into the next room and thendrop into the test chamber. Before you drop to the lower level,shoot one portal at the topand then jump. This will allow you tograb a cubeandbring it back through the portaleasily.Place the cube on the buttonto unlock the door.