Completing the following tasks unlocks Achievements and XP for your Google Play account.

Achievement	How to unlock
5 Guardians! (500 XP)	Collect all 5 Guardians.
A Hearty Gift (500 XP)	Send a heart to a friend.
Combo Beginner (500 XP)	Get a 10-move combo.
Combo Chaser (500 XP)	Get a 30-move combo.
Combo Hunter (500 XP)	Get a 20-move combo.
Combo Master (500 XP)	Get a -move combo.
Friends Indeed(500 XP)	Make 10 friends.
Friendship Cap'n (500 XP)	Make 30 friends.
Makeup Master (500 XP)	Get a character to the max level.
My First Friend (500 XP)	Make a friend.
One Mind (500 XP)	Make 20 friends.
Score Beginner (500 XP)	Get a score of 10,000 or more.
Score Chaser (500 XP)	Get a score of 50,000 or more.
Score Hunter (500 XP)	Get a score of 25,000 or more.
Score Master (500 XP)	Get a score of 50,000 or more.