Portal 2
Sidekick*
Playtime
28.2h
Completed
Oct 29, 2026
Achievements
🏆 Perfect51/51
100% complete
All Achievements
Iron Grip
Never lose a cube in Chamber 6 of the Mass and Velocity co-op course
3.6%
Dec 22, 2025
Four Ring Circus
Enter 4 different portals without touching the ground in co-op
6.8%
Dec 22, 2025
Talent Show
Never lose a cube in Chamber 6 of the Mobility Gels co-op course
2.7%
Dec 22, 2025
Portal Conservation Society
Complete Chamber 3 in the Hard-Light Surfaces co-op course using only 5 total portal placements
2.8%
Dec 22, 2025
Still Alive
Complete Course 4 with neither you nor your co-op partner dying
2.4%
Dec 22, 2025
Pit Boss
Show that pit who's boss
7.9%
Dec 21, 2025
Smash TV
Break 11 test chamber monitors
3.7%
Dec 21, 2025
Tunnel of Funnel
Master the Excursion Funnel
35.1%
Dec 21, 2025
Triple Crown
Solve 3 co-op chambers in the Mass and Velocity course in under 60 seconds each
3%
Dec 21, 2025
Friends List With Benefits
While playing co-op, hug 3 different people on your friends list
4.5%
Dec 21, 2025
White Out
Complete the first Conversion Gel test
38.2%
Dec 20, 2025
Stranger Than Friction
Master the Propulsion Gel
39.3%
Dec 20, 2025
Portrait of a Lady
Find a hidden portrait
11.6%
Dec 20, 2025
Tater Tote
Carry science forward
40.9%
Dec 20, 2025
Schrodinger's Catch
Catch a blue-painted box before it touches the ground
6.9%
Dec 20, 2025
Door Prize
Examine all the vitrified test chamber doors
7.2%
Dec 20, 2025
Overclocker
Complete Test Chamber 10 in 70 seconds
4%
Feb 13, 2025
Final Transmission
Find the hidden signal in one of the Rat Man's dens
5.4%
Feb 10, 2025
Professor Portal
After completing co-op, complete Calibration Course online with a friend who hasn’t played before
5.9%
Jan 5, 2015
The Part Where He Kills You
This is that part
34.4%
Jul 12, 2014
Good Listener
Take GLaDOS' escape advice
28.3%
May 30, 2014
Dual Pit Experiment
Do the same test twice
36.9%
May 23, 2014
You Made Your Point
Refuse to solve the first test in Chapter 8
6.5%
May 23, 2014
You Saved Science
Complete all test chambers in all courses of co-op
21.2%
May 23, 2014
Asking for Trouble
Taunt GLaDOS in front of a camera in each of the five co-op courses
8.9%
May 23, 2014
Obstacle Building
Complete all test chambers in the Excursion Funnels co-op course
26.3%
May 18, 2014
Party of Three
Find the hidden companion cube in co-op test chamber
3.5%
May 18, 2014
Pturretdactyl
Use an Aerial Faith Plate to launch a turret
8.7%
May 18, 2014
Gesticul-8
Perform all 8 gestures of your own volition in co-op
27%
May 18, 2014
Bridge Building
Complete all test chambers in the Hard-Light Surfaces co-op course
32%
May 18, 2014
Can't Touch This
Dance in front of a turret blocked by a hard light bridge in co-op
9.8%
May 18, 2014
Rock Portal Scissors
Win 3 co-op games of rock-paper-scissors in a row
9.8%
May 18, 2014
Empty Gesture
Drop your co-op partner in goo while they are gesturing by removing the bridge under them
4.6%
May 18, 2014
Confidence Building
Complete all test chambers in the Mass and Velocity co-op course
40.9%
May 18, 2014
Air Show
Perform 2 aerial gestures before touching the ground in co-op
33.2%
May 15, 2014
Narbacular Drop
Place a portal under your co-op partner while they are gesturing
5.8%
May 15, 2014
Lunacy
That just happened
34.1%
May 15, 2014
Ship Overboard
Discover the missing experiment
10.7%
May 10, 2014
Vertically Unchallenged
Master the Repulsion Gel
42.8%
May 10, 2014
Stalemate Associate
Press the button!
45.5%
May 7, 2014
Scanned Alone
Stand in a defective turret detector
34.7%
May 7, 2014
No Hard Feelings
Save a turret from redemption
31%
May 7, 2014
SaBOTour
Make a break for it
46.5%
May 7, 2014
Team Building
Complete all test chambers in the Team Building co-op course
49.4%
Dec 1, 2013
High Five
Celebrate your cooperative calibration success
58.5%
Dec 1, 2013
Bridge Over Troubling Water
Complete the first Hard Light Bridge test
53.2%
Nov 29, 2013
Preservation of Mass
Break the rules in Test Chamber 07
24.4%
Nov 29, 2013
Drop Box
Place a cube on a button without touching the cube
28.9%
Nov 29, 2013
Undiscouraged
Complete the first Thermal Discouragement Beam test
62.6%
Nov 29, 2013
You Monster
Reunite with GLaDOS
64.7%
Nov 29, 2013
Wake Up Call
Survive the manual override
74%
Nov 29, 2013