Here is the full list of all 50 Blur achievements worth 1,000 gamerscore. It takes around 40-50 hours to unlock all of the achievements on Xbox 360.
Master the Shield Power-up
Explore Blur's locations
Unlock Legend Mode
Earn all Primary Lights in M.Haruna Checkpoint without damaging your car
Have a complete experience of Friend Challenges
Hit set speeds in class A, B, C and D cars
Beat Shannon again in her One-on-One
Master Race events
Master the Shock Power-up
Show that you can bring the fight to One-on-Ones
Beat Carver in his One-on-One
Master the Repair Power-up
Master the Shunt Power-up
Master the Mine Power-up
Beat the twins in their One-on-One
Beat Talon in his One-on-One
Prove yourself by completing Rival Demands in career
Master the Nitro Power-up
Stand out from the crowd with car resprays
Master the Bolt Power-up
Win a race in multiple playlists
Beat Natalya in her One-on-One
Beat Drayke in his One-on-One
Beat Rhymer in his One-on-One
Master Fan Demands
Beat a Rank 50 player
Master the Barge Power-up
Race at each location in the game
Beat Khan in his One-on-One
Wreck your first Rival in a One-on-One
Win a race using a custom mod setup
Become an Award-winning racer
Finish a race 0.1 seconds or less ahead of another player online
Wreck a Blur developer on Xbox LIVE, or anyone with this Achievement
Beat Shannon in her One-on-One
Unlock Shannon's One-on-One
Earn your first Fan Target
Evade or destroy your first incoming Power-up
Wreck your first car
Complete your first Fan Run
Choose any Friend as a Rival from the Single Player Leaderboards
Share your first Blur experience on Facebook, Twitter or Xbox LIVE
Master Destruction events
Master Checkpoint events
Master Fan Runs
Complete everything in the singleplayer game
Earn every Primary Light on Hard difficulty
Master the Blur Challenges
Earn the Motor Mash sticker
Win a race in 4 player Split Screen