During your escape with Wheatly you will eventually run into the 'Bring your daughter to work day' room. Which has all sorts of different science fair Potato projects. If you go down to the very end of the line you will find the over grown potato. Look closely You will find the owner of the project has written her name on one of the bottom corners. Why, it's Chell!
Cave Johnson's Secret Monologue
In the first test chamber, after discovering white gel (where it comes down from a pipe infinitely), if you stay in the chamber for really long time (about 10 minutes or so), Cave Johnson will reveal secrets about Caroline and GLaDOS in a long monologue.
Easy "Door Prize" trophy
While attempting to earn the "Ship Overboard" achievement or trophy, once you enter the door behind the filing cabinet there are three metal doors in the hallway. If you activate the doors. Cave Johnson talks about the tests. Activate all three doors and the achievement or trophy will be unlocked.
Easy "Final Transmission" trophy
Play Chapter 2 "Test Chamber 6". Get the radio that appears in a clump of garbage into a window above the chamber after you hit a button. Work your way back through the level and place a portal on the pad across from the window. Use the launchers to get through the portal and into the room past the window, with radio in hand. Take the radio up to the wall to earn the trophy.
Easy "No Hard Feelings" trophy
Play Chapter 5 "The Escape" and reach the conveyor belts carrying droids to the incinerator. Use a portal to get onto the conveyor belt. Walk on the belt until a droid with a working laser beam appears. Pick it up to earn the trophy.
Easy "Pit Boss" trophy
Play Chapter 9. After Wheatley's surprise, portal away from the platform just as Wheatley sends arms to crush you. Do not run away on the catwalk. Stay nearby and Wheatly will beg you to come back. Stand at the edge of the pit overlooking his trap. He will ask you to just jump in the pit. Jump in to earn the trophy.
Easy "Preservation Of Mass" trophy
Play Chapter 2 "Test Chamber 7". Keep track of the Companion Cube in this chamber. You can return to get it at the end of the level after using it to depress the button. Ignore GLadOS's comments and carry the cube through the broken "Emancipation Grill" at the end of the chamber to earn the trophy.
Easy "Schrodinger's Catch" trophy
Play Chapter 6 "The Fall" and reach the 1958 "28" room. There is a cube is trapped in a glass box and Blue Gel streaming out of a pipe in one corner in this room. Save the game. Shoot a portal under the Gel and over the crate to coat the cube. The cube will bounce until it breaks the glass. It will eventually break out of the glass. Catch this cube before it touches the ground to earn the trophy. Note: Try standing between the entrance and the gel spout.
Easy "Ship Overboard" trophy
Play Chapter 6 "The Fall" and reach the 1971-era test facility. Cave will begin talking about testing on hobos. Below one of the test spheres and a giant Aperture logo is a room marked "CONTROL ROOM" in yellow letters. Use a portal to get high above the Control Room and enter the small office. There is a cabinet with a door behind it in the corner of this office. Enter that door and follow the hidden hallway to a dock. At the end of the walkway near the docks is a orange life preserver marked "BOREALIS". Examine it to earn the trophy. Note: This is a reference to the Aperture ship "Borealis" that is seen at the end of Half Life 2: Episode 2.
Easy "Smash TV" Trophy
Test Chamber 1
Lift a box using the funnel. Note: Make sure you are on the lower section. Using its now gained height, throw it at Wheatley.
Test Chamber 2
Same as Test Chamber 1.
Test Chamber 3
Same as Test Chambers 1 and 2, but make sure you are in the first section of the chamber.
Test Chamber 4
Pick up the turret behind the button and aim it at Wheatley. It will not shoot until released, setting it upright.
Test Chamber 5
There are two monitors in this chamber. Both can be smashed by lifting a box in a funnel and throwing it, however the exit portals are in two different locations. The monitor first is on the wall in which the funnel is being projected on, around the center. This will require some experimentation to get. The second monitor is on the very right of the angled surface that you go through on your way to the exit.
Test Chamber 6
Launch yourself on the Aerial Faith Plate.
Test Chamber 11
Burn him with the Discouragement beam and the Redirection cube. You will need to use the box to get the beam on a Portal conductive surface, then use portals to get the beam to hit Wheatley.
Test Chamber 12
When you are where you would normally use the cube to open the door, burn the monitor.
Test Chamber 15
Do the same thing as Test Chambers 1, 2, and 3.
Test Chamber 16
Note: This will require several attempts. Do the test normally. Save the game before the part where you coat turrets in Repulsion Gel. Only coat two of the turrets, leaving one alive. Save the game again. Using one of the portal surfaces on each side of the turret platform, jump on the platform while pressing [Crouch] to avoid bouncing on gel. Grab the remaining turret and use it to shoot Wheatley. Consider going behind the black strip of wall in front of the turret after you bounce the other two. Wait for him to begin shutting down then run out and grab him. By doing this, you can get him during the time required to close himself and re-open.
How to Get The Co-Op Action "Hugs"
To get the co-op action "Hugs," head to the last level of the Hard Light Chamber (just before you insert the disk) where you must launch each other in the air and collide. Pull this off and the robots will hug.
Lyrics to End Song "Want You Gone"
Want You Gone (Jonathan Coulton)
Well here we are again, It's always such a pleasure, Remember when you tried to kill me twice? Oh, how we laughed and laughed, Except I wasn't laughing, Under the circumstances I've been shockingly nice.
You want your freedom take it, That's what I'm counting on, I used to want you dead but, Now I only want you gone.
She was a lot like you, (Maybe not quite as heavy), Now little Caroline is in here too. One day they woke me up, So I could live forever, It's such a shame the same will never happen to you.
You've got your short, sad life left, That's what I'm counting on, I'll let you get right to it, Now I only want you gone.
Goodbye, my only friend, Oh, did you think I meant you? That would be funny if it weren't so sad, Well you have been replaced, I don't need anyone now, When I delete you maybe I'll stop feeling so bad.
Go make some new disaster, That's what I'm counting on, You're someone else's problem, Now I only want you gone, Now I only want you gone, Now I only want you gone.
Secret Room in Chamber 17
As you enter Test Chamber 17 in Chapter 3, look at the black wall high up to the left. There's a retracted plate there and you can portal the lightbridge to get over to it. Behind the retracted plate lies a mysterious, secret room filled with cups. There's also some art and a poem on the wall.
See Peabody (the Co-op Robot) in Single Player
As your progress through Wheatley's tests in Chapter 2, on test 15, zoom into the area where he is "making" an exit for you. By the door you can see Peabody become startled and run through the exit door.
Singing turrets
There is a turret inside a ventilation grate just past the elevator in Test Chamber 16. Jump over it, get the Refraction Cube, then use the laser to destroy that turret to open the grate. Enter the new area to find four turrets singing a song.
Sunbridges Are Synthesizers?
Squat under a sunbridge and listen to the harmonious jams of the sun.
Various Trophies
Complete the following tasks to unlock PlayStation 3 trophy rewards.
Trophy
How to unlock
Air Show (Bronze)
Perform 2 aerial gestures before touching the ground in co-op.
Asking for Trouble (Bronze)
Taunt GLaDOS in front of a camera in each of the five co-op courses.
Bridge Building (Bronze)
Complete all test chambers in the Hard-Light Surfaces co-op course.
Bridge Over Troubling Water (Bronze)
Complete the first Hard-Light Surfaces test.
Can't Touch This (Bronze)
Dance in front of a turret blocked by a hard light bridge in co-op.
Confidence Building (Bronze)
Complete all test chambers in the Mass and Velocity co-op course.
Door Prize (Bronze)
Examine all the vitrified test chamber doors.
Drop Box (Silver)
Place a cube on a button without touching the cube.
Dual Pit Experiment (Bronze)
Do the same test twice.
Empty Gesture (Bronze)
Drop your co-op partner in goo while they are gesturing by removing the bridge under them.
Final Transmission (Bronze)
Find the hidden signal in one of the Rat Man's dens.
Four Ring Circus (Bronze)
Enter 4 different portals without touching the ground in co-op.
Friends List With Benefits (Silver)
While playing co-op, hug 3 different people on your friends list.
Gesticul-8 (Bronze)
Perform all 8 gestures of your own volition in co-op.
Good Listener (Bronze)
Take GLaDOS' escape advice.
High Five (Bronze)
Celebrate your cooperative calibration success.
Iron Grip (Bronze)
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course.
Lunacy (Gold)
That just happened.
Narbacular Drop (Silver)
Place a portal under your co-op partner while they are gesturing.
No Hard Feelings (Bronze)
Save a turret from redemption.
Obstacle Building (Bronze)
Complete all test chambers in the Excursion Funnels co-op course.
Overclocker (Silver)
Complete Test Chamber 10 in 70 seconds.
Party of Three (Bronze)
Find the hidden companion cube in co-op test chamber.
Pit Boss (Bronze)
Show that pit who's boss.
Portal 2 Platinum Trophy (Platinum)
Collected all other Portal 2 trophies.
Portal Conservation Society (Bronze)
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements.
Portrait of a Lady (Bronze)
Find a hidden portrait.
Preservation of Mass (Bronze)
Break the rules in Test Chamber 07.
Professor Portal (Gold)
After completing co-op, complete Calibration Course online with a friend who hasn't played before.
Pturretdactyl (Bronze)
Use an Aerial Faith Plate to launch a turret.
Rock Portal Scissors (Silver)
Win 3 co-op games of rock-paper-scissors in a row.
SaBOTour (Bronze)
Make a break for it.
Scanned Alone (Bronze)
Stand in a defective turret detector.
Schrodinger's Catch (Bronze)
Catch a blue-painted box before it touches the ground.
Ship Overboard (Bronze)
Discover the missing experiment.
Smash TV (Bronze)
Break 11 test chamber monitors.
Stalemate Associate (Bronze)
Press the button!
Still Alive (Bronze)
Complete Course 4 with neither you nor your co-op partner dying.
Stranger Than Friction (Bronze)
Master the Propulsion Gel.
Tater Tote (Bronze)
Carry science forward.
Team Building (Bronze)
Complete all test chambers in the Team Building co-op course.
The Part Where He Kills You (Bronze)
This is that part.
Triple Crown (Bronze)
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each.
Tunnel of Funnel (Bronze)
Master the Excursion Funnel.
Undiscouraged (Bronze)
Complete the first Thermal Discouragement Beam test.
Vertically Unchallenged (Bronze)
Master the Repulsion Gel.
Wake Up Call (Bronze)
Survive the manual override.
White Out (Bronze)
Complete the first Conversion Gel test.
You Made Your Point (Bronze)
Refuse to solve the first test in Chapter 8.
You Monster (Bronze)
Reunite with GLaDOS.
You Saved Science (Gold)
Complete all test chambers in all courses of co-op.
