Portal: Still Alive

					
Game Cheats:
Unlock Gamer Picture:

In the main game when you reach the end of test chamber 17 incinerate your companion cube to unlock a gamer picture.

Unlock Bonus Gamerpics:

When you have completed the game 2 Gamerpics will become available options. The 2 gamerpics are of Companion Cube with wings and a knife cutting a cake. 
Cheat Mode:

Enter the following codes during gameplay to activate their corresponding effect.
Create Box:

Down, B, A, B, Y, Down, B, A, B, Y.
Fire Energy Ball:

Press Up, Y, Y, X, X, A, A, B, B, Up.
Fire Rocket Projectile:

Press Up, Y, Y, B, B, A, A, X, X, Up.
Portal Placement Anywhere:

Press Y, A, B, A, B, Y, Y, A, Left, Right.
Portalgun ID 0:

Press Up, Left, Down, Right, Up, Left, Down, Right, Y, Y.
Portalgun ID 1:

Press Up, Left, Down, Right, Up, Left, Down, Right, X, X.
Portalgun ID 2:

Press Up, Left, Down, Right, Up, Left, Down, Right, A, A.
Portalgun ID 3:

Press Up, Left, Down, Right, Up, Left, Down, Right, B, B.
Upgrade Portalgun:

Press X, B, LB, RB, Left, Right, LB, RB, LT, RT.
Surface all smooth:

This cheat is to place portals anywhere! Y,A,B,A,B,Y,A Left on D-pad then right on D-pad