M.C. Kids/CosMc's Retreat

On the moon you will meet CosMc, who will inform you that the force of gravity is very low there. He will also tell you that if you find at least five cards of his puzzle, he will show you where Hamburglar is hiding. However, you should already be in possession of one of his cards.

Level 1 - Moon Monsters
As the name suggests, there are some very dangerous lunar monsters in this level, sprouting from mounds in the ground. If they grab you you will immediately lose a life, so be careful. Take advantage of the fact that here you can jump very high, thanks to the low gravity, to overcome them. That said, the level is fairly linear. Shortly after the start, there is a suspended platform with many arches. Keep going until you come to a rocky wall just after a sign with an arrow pointing to the right. Climb to the top and take a long jump to the left. You will find a card to collect in the sky. Then go back where is the sign. Here is a secret passage that allows you to pass through the lunar ground (like in the clouds in Birdie's Treehouse). You will come to an area with two 1-Ups and a card suspended in the void above a dotted platform. Jump on them without taking them and reach the right wall. Here too there is a secret passage. You will then find a fill-in block. Go back and place it on the platform. You can thus collect the card and the extra lives without dying. Exit this hidden area and continue to the right, until you reach the finish line. Thanks to the very long jumps you can make here, getting to the right of it won't be a problem.

Both cards you found are for CosMc's Retreat.

Level 2 - Swisserland
A labyrinthine level. Here, however, the force of gravity is normal. Head left immediately and drop as low as you can. Then proceed to the right removing the blocks you will encounter and at the bottom you will find a 1-Up. Go back, go up along the same path and halfway up go right. Follow the path. When you arrive at a large space, you will have to make a jump in order to take the tunnel on the right. If you fail you will have to go back and try again. Once done, you will come to a zipper. Enter it to take you to another area of the level. Go right and remove the block at the bottom of the hollow to find another 1-Up. Go back and go right. Jump over any gaps you find and eventually you will find a card. Grab it and remove the blocks you just passed. You will end up straight on the finish line. Unfortunately here, taking the Golden Arch to the right of the line is almost impossible.

The card you found is for CosMc’s Retreat.