Here is the full list of all 21 Portal: Revolution achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Take a shower under one of the gel cleansing fields
Deplete the conveyors' supply of Weighted Storage Cubes
Destroy the spire
Smear your dirty fingers over Aperture's beautiful glass
Reach the surface... again
Solve Chamber 6-6 the fun way
Solve Chamber 6-6 the boring way
Stare at Conly's mannequins for a really long time
Solve the Chamber 6-2 twice
Find a new companion
Complete Chamber 5-1 without destroying any turrets
Reach the Spire
Deplete the gel supply in Chamber 4-11
Fling in an endless loop in Chamber 4-11
Get the ball in 4-10 to land perfectly in the socket
Complete the Chamber 4-9 without knocking over any turrets
Upgrade your portal gun
Find the elevator to the surface
Blow up a test chamber sign
Become an Aperture employee
Thank you for volunteering!