What are the different challenges I can play?
Heroic Challenge: Placing a Skylander on the portal will unlock its Heroic Challenge. This is a timed challenge that will reward any Skylander who completes it with a stat bonus. The 24 reposed Skylanders will unlock their challenges, plus 16 for the new Giants and Skylanders. There are now also 6 Heroic Challenges that can be bought in the Auric Store. The Heroic Challenges are accessible by talking to Cali in the Hub - The Dreadyacht. The user has to be the owner of the toys in order to unlock their Heroic Challenges.
Arena Challenge: This is a new addition in Giants. There are a total of 21 arenas with waves of enemies. Each set of 7 Arenas will reward the user with Lucky Charms. These Arena Challenges are accessible by talking to Brook in the Hub – The Dreadyacht.