Practice mode:
To unlock Practice mode, get Kitty Bling in Story mode.
White Room:
To unlock the White Room, score 10,000 points in Practice mode.
All-Stars:
Score the following amounts of points in Practice mode to unlock the corresponding All-Stars:
40 points – Strike the soccer player
400 points – Ace the tennis player
1600 points – Clutch the baseball player
4000 points – Slice the golf player
10000 points – Snappy the football player