A bit of Nintendolife's review:

The Kore Gang is constructed in a rather blasé manner. The levels simply don't seem like they make the most out of the character-swap concept and it all feels very repetitive. You'll run around in an enclosed level, collect lots of odds and ends, always find some orange circles to grapple and swing from, some enemies to fight and some projectiles to throw, but none of it's put together in a particularly inventive way. Combat boils down to furiously tapping the B button, while throwing a projectile requires an uncomfortable contortion of the wrist.

Completing these actions is made more difficult by the poor camera. It struggles to give the best view, a problem difficult to fix on the Wii Remote with so few buttons at the developer's disposal, but the problems could have been avoided with some clever Classic Controller implementation. The pointer functionality would be lost, but it's mostly non-essential.

Check out the source link for the full piece.

Source: Nintendolife