If You complete the indicated task You'll get the allotted gamerscore.
Roogoo Guru (50) - Achieve par time on all levels.
Bat Attack (35) - Score 100% accuracy on Bat Attack.
Fly Butterfly (20) - Score 100% accuracy on Fly Butterfly.
Tower of Moo (15) - Beat par time on Tower of Moo.
ROO-Race (15) - Win a multiplayer match on Bursting EX.
Comeback ROO (13) - Win a multiplayer match with only one shape to lose remaining.
Meemoo Savvy (10) - Don't miss any shapes after the first Meemoo attack.
ROO-Worthy (10) - Unlock the first 10 levels.
Bonus Drop (10) - Score perfect on any bonus stage.
Acc-ROO-acy (10) - Score 100% accuracy on any 10 levels.
Meemoo Headache (7) - Knock off 7 consecutive Meemoo on a platform.
One Track Mind (5) - Only rotate in one direction for any 5 levels.