Complete the following achievements to unlock Xbox Live Gamerscore points.

Achievement	How to unlock
It's All In The Reflexes ( 10 points )	Caught a flying object at least 25 times with Knives.
Ninja Somersault ( 20 points )	Performed at least 10 consecutive head stomps successfully with Knives.
Speed Run ( 20 points )	Cleared the game in 90 minutes or less with Knives.