Achievements...
	Pink Costume...

By completing certain objectives in the game, you'll unlock special awards and titles.

Achievement	How to unlock
1,000 Meters	Climb 1,000 meters in Classic Mode.
10,000 Meters	Climb 10,000 meters in Classic Mode.
100 Meters	Climb 100 meters in Classic Mode.
2,000 Meters	Climb 2,000 meters in Classic Mode.
250 Meters	Climb 250 meters in Classic Mode.
5,000 Meters	Climb 5,000 meters in Classic Mode.
500 Meters	Climb 500 meters in Classic Mode.
Aerophobia	Climb 1,000 meters in Classic Mode without using a height boosting powerup.
Anti-Gravity	Fall off the tree as Anti-Ninja.
Baby Ninja	Fall off the tree below 20 meters.
Chain Smoker	Collect 3 smoke bombs in a row without collecting any other kind of powerup.
Cuckoo	Let the clock drop to 1 second in Timed Mode, then recover.
Great Ape	Grab 1,000 branches over multiple games.
Great Balls Of Fire	Trigger 10 fireballs in one game.
Hurried Up	Climb 250 meters without stopping for more than a second at a time.
Kicking The Habit	Collect 3 smoke bombs in a row without collecting any other kind of powerup, then chew a pack of gum to break the addiction.
Lunatic	Observe all phases of the moon.
Moonwalker	Travel 10 meters backwards while the moon is visible.
Night Owl	Climb 500 meters in a single night.
Ol' Monkey Ninja	Climb 30 meters using only branches and mushrooms.
Power Overwhelming	Collect 50 of each powerup over multiple games.
Purple Pain	Collide with Dark Syrup or get hit by Syrup Devils a total of 50 times over multiple games.
Red Baron	Fly a total of 2,500 meters as Super Ninja over multiple games.
Rocket Man	Climb a total of 100,000 meters over multiple games.
Stop! Ninjatime!	Collect 5 Ninjatime Hourglasses in one game.
Sundown	Travel 1,000 meters before the sun sets for the first time without using the 1,000 Meter Bomb.
Survive 1 Minute	Survive for 1 minute in Timed Mode.
Survive 10 Minutes	Survive for 10 minutes in Timed Mode.
Survive 5 Minutes	Survive for 5 minutes in Timed Mode.
Treadmill	Touch nothing but slippery bark for 30 consecutive seconds.
Ultra-Violet	Collect 5 bubble gum shields in one game without allowing any of them to pop.
Violet	Collect 3 bubble gum shields in one minute or less.

To wear this costume you have to go to the menu and tap on the sleeping ninja in the bottom right hand corner.