Here is the full list of all 40 Prince of Persia: The Forgotten Sands achievements worth 1,000 gamerscore.
We actually have no way of knowing how you found 'em all.
Finished the final battle against Ratash without taking any damage.
Defeated Ratash in the Throne Room wihout taking any damage.
Killed 50 enemies in a row without taking any damage.
Stayed on solidified water for 1 minute without backtracking using the Power of Time.
Defeated 50 enemies using the Whirlwind.
Finished off 10 enemies in a row using only the Aerial Slash.
Used aerial kick 15 times.
Jumped on 30 enemies in a row.
Don't worry. We won't tell if you don't.
Defeated 50 enemies using the Flame Trail.
Purchased every upgrade.
Completed the Enemy Tides Challenge.
Finished 5 titans with the Aerial Slash.
Complete the game.
Reached the final fight.
Defeated 50 enemies using the Ice Blast.
Upgraded one power to its highest level.
Razia becomes part of sword.
Defeated 50 enemies while using the Stone Armor.
Arrived in Razia's city.
Suffered defeat at Malik's hands.
Defeated 30 enemies using the Power of Flight.
Killed 500 enemies using the sword.
Kicked 20 enemies off of ledges.
Defeated Ratash?
Used the Power of Time 20 times.
Used the finishing lunge 20 times.
Performed 20 Aerial Slash attacks.
Closed the fortress gates.
Wall run for a total of 1/2 mile (805 meters).
Saved the Prince's life by using the Power of Time.
Knocked down 5 enemies with 1 kick.
Broke 100 things. (Feel better?)
Found a sarcophagus.
Used the upgrade menu.
Discovered the true nature of Solomon's army.
Caught up to Malik.
Defeated an enemy with a power attack at the end of a combo.
There's no turning back now!