Complete the following tasks to unlock Vita trophy rewards.

Trophy	How to unlock
Master Skeleton (Gold)	Complete the game.
One More Time (Bronze)	100 Restarts.
Skull Breaker (Bronze)	Hit yor head 50 times.
Smooth Rock (Silver)	Complete first track in 'Rocks' cup without falling.
Starting Out (Bronze)	Finish first two levels.
World 1 (Silver)	Finish first cup.
World 2 (Silver)	Finish second cup.
World 3 (Silver)	Complete third cup.
World 4 (Silver)	Complete fourth cup.