Prince of Persia: The Two Thrones Hints & Cheats

Get your dagger out, throw away any secondary weapon you have, pause the game and enter the code (In the pause screen).

Try to keep an even rhythm (Press up, down once to hear a good rhythm, press again when the sound stops).

NOTE: Sometimes you need to first unlock a Chainsaw for the other codes to work.
NOTE: You don't have to actually complete any modes to *use* the codes.

After you open the gate that leads to the chariot race make your way down.
Facing the gate go to the most northeast pole where the enemies spawn. Simply climb the pole halfway and jump south. You will now hear a sensitized voice naming a few of the sound developers.

Save at a fountain that is near one of those Sand Credit Chests("You have collected 10 Sand Credits") but do not break it open. I recommend the save point "The Balconies".

After that, break the chest open, wait for the 10 Sand Credits message, and then quit out of your game. Load the same save and break the same chest, then quit and repeat the steps as much as needed.