Here is the full list of all 20 Joe Danger: Special Edition achievements worth 200 gamerscore.
Get a level Combo Star
Get a Time Star
Find 3 Hidden Stars
Get 5 Coin Dash stars
Get 5 Target Stars
Collect all Pickups on 8 levels
Complete the first two levels
Send 1 level to a friend
Receive 1 level from a friend
Get 15 Time Stars
Get 30 Combo Stars
Get a x100 combo
Get 4 stars in one run
Unlock the credits level
So dangerous they named him twice! Collect all stars in career mode.
Conquer the first challenges in the lab to become the Maestro of Madness!
Crash through the second lab tour to become the Commander of Catastrophe!
Duck and dive through the third lab tour to become the Duke of Destruction!
Conclude the fourth lab tour to be crowned the King of Chaos!
Conclude the fifth lab tour.