Kao the Kangaroo Round 2 (PS2)

Baseball mini-game
Collect 250 crystals.

Jump further
Collect 50 stars.

More efficient jump attack
Collect 100 stars.

More efficient tail attack
Collect 150 stars.

Race mini-game
Collect 200 crystals.

Roll as much as desired
Collect 200 stars.

Rope mini-game
Collect 50 crystals.

Shooting mini-game
Collect 150 crystals.

Trees mini-game
Collect 100 crystals.

Unlimited boomerangs
Collect 250 stars.