Discs of Tron Achievements

Complete each achievement to get the allotted gamerscore. The numbers between the () is the points given for each achievement.
AchievementHow to unlock
Deflector (5)Deflect 7 discs or chasers.
High Score (5)Get first place on in-game score board using default settings.
Fearless (10)Derezz Sark 4 times without using your deflector.
Rock Steady (10)Derezz Sark once without moving.
One Shot (10)Derezz Sark 3 times by only throwing one disc at a time.
Sharp Shooter (10)Destroy 5 enemy discs in the air in a row.
On the Run (10)Stay alive for one minute without getting hit or throwing a disc.
Chaser Shooter (15)Destroy 5 Chasers or Super Chasers.
Speed Master (20)Win 5 Speed Versus games over Xbox Live.
Teamwork! (25)Achieve a score of 50,000 or more playing an Xbox Live Co-op game.
50k (35)Rack up 50,000 points using default settings.
Immortal (45)Rack up 60,000 points without dying.