Adventure Ponies

Its a game on Hasbro's website.

Twilight Sparkle

Movement: Teleport

Attack: Spell Shot

Unlockablity: Default

Rainbow Dash

Movement: Flight

Attack: Dash Attack

Unlockablity: First Unlock (Beat Twilight Sparkle Story)

Applejack

Movement: Ladders (Donkey Kong Style!)

Attack: Kick/Melee

Unlockablity: Second Unlock (Beat Rainbow Dash Story)

Pinkie Pie

Movement: Ladders (Same as Applejack)

Attack: Party Cannon (Ranged)

Unlockablity: Third Unlock (Beat Applejack Story)

Rarity

Movement: Teleport (Same as Twilight)

Attack: Spell Shot (Same as Twilight)

Unlockablity: Fourth Unlock (Beat Pinkie Pie Story)

Fluttershy

Movement: Flight

Attack: Stare/Melee

Unlockablity: Fifth Unlock (Beat Rarity Story)

Bosses (not in order)

 * Diamond Dogs
 * Discord
 * Hydra
 * Dragon
 * Iron Will
 * Gilda