Half-Life 2: Episode One Cheats, The Orange Box.

Level select

While playing the game, press Left(4), L1, Right(4), R1 to unlock all levels.

Restore health

While playing the game, press Up(2), Down(2), Left, Right, Left, Right, Circle, X to spawn a medpak that will restore 25 points of health.

Refill ammunition for current weapon

While playing the game, press Triangle, Circle, X, Square, R1, Triangle, Square, X, Circle, R1 to spawn an ammunition cartridge for your current weapon.

No clipping mode

While playing the game, press Up(3), L1, Up(3), R1, Up(2).

Enemies do not target you

While playing the game, press Down(3), L1, Down(3), R1, Down(2).