| Achievement |
TSA |
Flags |
 |
PacifistComplete the Chamber 4-9 without knocking over any turrets |
21 |
  |
 |
Sending a messageBlow up a test chamber sign |
16 |
  |
 |
Refreshing showerTake a shower under one of the gel cleansing fields |
21 |
  |
 |
Just in timeDeplete the conveyors' supply of Weighted Storage Cubes |
20 |
   |
 |
Captivating LooksStare at Conly's mannequins for a really long time |
20 |
   |
 |
FingerprinterSmear your dirty fingers over Aperture's beautiful glass |
22 |
   |
 |
To the surface and beyondFind the elevator to the surface (Secret) |
12 |
   |
 |
Journey CompleteReach the Spire (Secret) |
14 |
   |
 |
New friendsFind a new companion (Secret) |
14 |
   |
 |
Upgrade?Upgrade your portal gun (Secret) |
13 |
   |
 |
Let's do this one last timeReach the surface... again (Secret) |
14 |
   |
 |
Back to bedDestroy the spire (Secret) |
15 |
   |
 |
Endless loopFling in an endless loop in Chamber 4-11 |
19 |
  |
 |
Supply Chain ProblemsDeplete the gel supply in Chamber 4-11 |
21 |
   |
 |
Two times the charmSolve the Chamber 6-2 twice |
21 |
  |
 |
Still a pacifistComplete Chamber 5-1 without destroying any turrets |
21 |
  |
 |
The boring solutionSolve Chamber 6-6 the boring way |
16 |
  |
 |
The fun solutionSolve Chamber 6-6 the fun way |
17 |
  |
 |
HiredBecome an Aperture employee (Secret) |
11 |
   |
 |
BullseyeGet the ball in 4-10 to land perfectly in the socket |
16 |
  |
 |
VolunteerThank you for volunteering! (Secret) |
10 |
   |