Fruitcake
Beat 10 advanced chambers
25 ✓ April 23rd, 2011
Like a Rat
Trap yourself in a test chamber so that GLaDOS has to help you continue.
20 ✓ May 5th, 2011
Tests Like Chicken
Find the chicken's test results.
15 ✓ April 21st, 2011
Cupcake
Beat 5 advanced chambers
10 ✓ April 22nd, 2011
The Camera Adds 10 Pounds
Knock a turret over with a security camera.
10 ✓ April 24th, 2011
A Feeling Like Floating
Dissolve a turret.
5 ✓ April 23rd, 2011
Vanilla Crazy Cake
Beat all advanced chambers
35 
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 
Go for the Gold
Win a gold medal on a challenge map.
15 
Rat's Tale
Find all the Rat Man dens.
15 
Saw That One Coming
Cause a rocket sentry to destroy its own rocket when the rocket has been redirected back towards it.
5