Tak: The Great Juju Challenge (Xbox)

Lok floats
Once you have received the spell for summoning barrels with Tak, go to the first level after training. Make a clear path through the thorns with the rhino. Then, put Tak about two yards away from the end of the path and summon a barrel. Next, switch to Lok and have Tak wait. Get on the rhino with Lok and ram directly into Tak. If done correctly, Lok should be floating.

Make Tak's head big or small
When the game is loading, press Right Analog-stick Up to make Tak's head big or Right Analog-stick Down to make it small.