Half-Life 2

Press Start, Up(6), Down, Start, Up(3), Down during game play.

When you get the jeep, use turbo towards a wall. Press (Y) to get out before you hit the wall. If done correctly, when the jeep flips you will also flip. Note: You may get hurt as well.

Have the Gravity Gun equipped, then press L, Black, R, White, Up, Down, Y, X, B, A during game play.

Pick up an item in the game without using the Gravity Gun. Drop it until it leaves the bottom part of the screen. Then, pick it back up and throw it as fast as possible. If done correctly, it will appear as if you are kicking the object. This is especially fun to do with the toy doll at the beginning of the game. Note: This works best with lighter objects.

Press Up(2), Down(2), Left, Right, Left, Right, B, A during game play to spawn a medpak that will restore 25 points of health.

Press Up(2), Down(2), Left, Right, Left, Right, B, A during game play to spawn a medpak that will restore 25 points of health.