Lego Indiana Jones: The Original Adventures

Press X, Y, B(2), Y, X, L(2), R(2), Up, Down, Left, Right, Start, Select at the title screen. A sound will confirm correct code entry.

Successfully complete Story mode.

After you go down the first windy hill, you will see a barrel. Set it on fire then throw a beer bottle at it. The barrel should explode. You should see a tunnel appear. Go in it and to your right you should see a man upside down with his gun below him. There is also an artifact that you can unlock by setting all the poles on fire.