Complete the following tasks to unlock Apple Game Center achievements.

Achievement	How to unlock
Action Dream	Unlock the Action Dream.
Africa Dream	Unlock the Africa Dream.
Airport Dream	Unlock the Airport Dream.
Day Dreamer	Dream for 1 hour.
Facebook Dreamer	Connect with Facebook.
Full Moon Dream	Unlock the Full Moon Dream.
Limbo	Unlock Limbo.
Narcoleptic	Dream for 20 hours.
Quiet Dream	Unlock the Quiet Dream.
Reverie Dream	Unlock the Reverie Dream.
Reward Dream	Unlock the Reward Dream.
Sleep Dream	Unlock the Sleep Dream.
Sleep Walker	Dream for 5 hours.
Still Dream	Unlock the Still Dream.
Sunshine Dream	Unlock the Sunshine Dream.
The Kick	Take a leap of faith.
Traveling Dream	Unlock the Traveling Dream.