9.86%
Fingerprinter
Smear your dirty fingers over Aperture's beautiful glass
11.27%
Two times the charm
Solve the Chamber 6-2 twice
11.27%
Pacifist
Complete the Chamber 4-9 without knocking over any turrets
11.27%
Supply Chain Problems
Deplete the gel supply in Chamber 4-11
12.68%
Refreshing shower
Take a shower under one of the gel cleansing fields
12.68%
Still a pacifist
Complete Chamber 5-1 without destroying any turrets
12.68%
Just in time
Deplete the conveyors' supply of Weighted Storage Cubes
16.90%
Captivating Looks
Stare at Conly's mannequins for a really long time
16.90%
Endless loop
Fling in an endless loop in Chamber 4-11
21.13%
The fun solution
Solve Chamber 6-6 the fun way
25.35%
Bullseye
Get the ball in 4-10 to land perfectly in the socket
30.99%
Sending a message
Blow up a test chamber sign