Here is the full list of all 14 SpeedJumper achievements.
Complete all levels in group 1
Complete all levels in group 2
Complete all levels in group 3
Complete all levels in group 4
Complete all levels in group 5
Complete all levels in group 6
Complete all levels in group 7
Collect all diamonds in group 1
Collect all diamonds in group 2
Collect all diamonds in group 3
Collect all diamonds in group 4
Collect all diamonds in group 5
Collect all diamonds in group 6
Collect all diamonds in group 7