Earn all available trophy.
Finish the tutorial.
Finish the 1st level.
Choose Hippo and beat your friend!
Play along with your friend!
You have to unlock 50% cards.
You have to unlock 100% cards.
Use Invisibility Card.
Use Oil Card.
Play all 27 Hippo's characters.
The crown must change owners 20 times in a single game.
Jump from the Christmas Tree.
Throw away the sheep from the map.
Win with a friend 3 times in a row.
Win with a friend 5 times in a row.
You have to unlock 75% cards.