Finished it.
The maze was piss easy once I understood it.
Pressing + on the wiimote brings up the map wherever you are.
You simply have to make your way to the big monster faces on the map and beat whoever is behind the door.
(All the bosses and all the characters, except for sonic,jigglypuff,wolf, toon link and Tabuu)
Then you go to the middle of the map (the tiny room) and press up at the weird vortex thing.
I unlocked Toon link also.
