Prince of Persia: The Forgotten Sands Cheats

Unlockable Swords, Costumes, and Prince of Persia Classic (1992)
In Order to unlock these new items you must do the following of these achievements.

King Sword: While defeated The Beast the third time get the magical sphere powers go back from the second stage entrance and it unlocks the achievement (Crystal)
Prince of Persia Classic (1992): When you started in the beginning go to the first waterfall and it unlocks the achievement (Green Retro Potion)
Prince Sword: Where you entered going inside the tank go back down where you entered there is a bug and step on it and it unlocks the achievement (Squish)
Sand Dagger: While you entered The Challenge of Wisdom Map, go down the stairs and you will see a pipe go on it and it will unlock the achievement (Cannonball)
The Sands of Time Prince Costume: Find the blue potion in the The Menagerie of the Myths map and it unlocks the achievement (Blue Retro Potion)
The Two Thrones Dark Prince Costume: Find the red potion in the The Water Bearer's map and it unlocks the achievement (Red Retro Potion)
Wall Breaker: Go underneath Mah's statue and it unlocks the achievement (Monolith)