Go to Timberdale. Go to the sundial. Set it to either of the golden dots (sunrise or sunset). Quickly get back to the hub and enter the Shadowrealm. The ending sequence will be different, with Vexx will flipping off Yabu.
Go to the table with the goblets of red and green goo. Get on top of the one with the red goo and wooden spoon. Climb up the handle of the wooden spoon. Jump up and down a few times on the end of the spoon and red goo will pop out, revealing an extra life.
In the pirate ship game with the three pirates from the belly of the large beast, it is easier to not try to change the colors of the squares yourself. Instead, watch the board and let the cannonballs do the work for you. In the below when you let the big fish swallow you, there will be three pirates that want you to open their treasure. The password is: A, B, X.