Mirrors Edge Secret Achievements

- 2 secret achievements
- 15 total gamerpoints
- 2 bronze trophies
- Both require the player to press the attack button at a strategic time.Team Xbox: Mirror's Edge Cheats

There are two secret achievements in the game, Mirror's Edge. They can only be unlocked in the story mode of the game on Xbox 360 and PS3.Team Xbox: Mirror's Edge Cheats
Pulling Off the Moves

In order to unlock the Sweet Goodbye achievement, the player must approach an enemy, jump by them, quick turn, and press attack. Faith will then give the enemy the British equivalent of the middle finger.
The It's a Me achievement is unlocked by landing atop an enemy. As Faith's feet touch the enemy, the player must press attack. Jumping is required to give Faith the force needed to execute the stomp.Team Xbox: Mirror's Edge Cheats
Flipping Someone Off, British Style

The guesture that Faith does for the Sweet Goodbye achievement is a backwards V-sign, which is commonly translated in England the same way someone in the United States would interpret a middle finger.
The V-sign is a postive guesture when given with the back of the hand facing the giver and the palm out. When given this way, it can mean many things, including peace and victory. The victory interpretation was first popularized by Winston Churchill, and the peace meaning was popular during the 1960s counterculture movement.
The guesture only becomes offensive when the giver turns the hand around, with the palm facing the giver and the back of the hand facing out.Wikipedia: V-Sign