Great gameplay
You feel overpowered - like the Avatar should feel...
... But the game can still test your skills
Fully voice acted with the original cast from the show
Lots of collectibles
Pro-Bending is fun and offers a variety of gameplay
Easy to pick up and play, especially the earlier levels, which offers quick bursts of elemental action
Lots of Easter Eggs and references to both shows (The Legend of Aang and The Legend of Korra)
Each Bending style feels different and yet works well together
Great music from the show
Graphics are good...
The Bending styles are mostly balanced...
The details are mostly correct and well thought out (such as the various bending animations)...
Weak Points:
... but could be better
... however, Air is a bit overpowered due to the ease of setting up combos
... but some details are wrong/missed out completely - you can Earthbend on wood for Raava's sake!
Rather short
Feels slightly rushed and, so, never quite reaches its potential as a full Avatar game
No Pro-Bending online or local multiplayer
You can't play as either of the other elements (Fire and Earth) in Pro-Bending
The Naga running sequences can get a bit dull and, in the case of chapter 5 on Extreme Mode, frustratingly difficult
You actually have to lower your power in order to get a platinum medal on Casual Mode
No way to change key-bindings
Would be nice to be able to Bend the environment rather than just 'create' elements
The Jill of All Trades achievement is completely missable and requires you to start completely over again in order to earn it
No trophy or record of your wins in the Pro-Bending arena
Rating: 80%
Warning: slight spoilers for both the game and the show ahead