Need For Speed ProStreet
50 Achievements
1,000
Xbox 360
Beat Showdown 3
Awarded for beating Showdown 3 in Career.
25
How to unlock the Beat Showdown 3 achievement in Need For Speed ProStreet - Definitive Guide
Just beat Showdown 1 and 2, and then dominate 5 events and win 9 to enter Showdown 3. Oh yeah, just make sure to use fast cars.