Vanilla Crazy Cake
Beat all advanced chambers
35 ✓ August 5th, 2009
Fruitcake
Beat 10 advanced chambers
25 ✓ August 4th, 2009
Like a Rat
Trap yourself in a test chamber so that GLaDOS has to help you continue.
20 ✓ August 4th, 2009
Go for the Gold
Win a gold medal on a challenge map.
15 ✓ August 4th, 2009
Rat's Tale
Find all the Rat Man dens.
15 ✓ August 4th, 2009
Tests Like Chicken
Find the chicken's test results.
15 ✓ August 4th, 2009
Cupcake
Beat 5 advanced chambers
10 ✓ March 1st, 2009
The Camera Adds 10 Pounds
Knock a turret over with a security camera.
10 ✓ August 4th, 2009
Saw That One Coming
Cause a rocket sentry to destroy its own rocket when the rocket has been redirected back towards it.
5 ✓ August 3rd, 2009
A Feeling Like Floating
Dissolve a turret.
5 ✓ August 4th, 2009
Out of the Blue
Once you have control of both portals, only enter the orange portal.
25 
Is Anyone There?
Complete the game without ever taking a bullet.
20