At the start, jump into a nearby barrel to shoot yourself to a background area. Jump into a cave on the far left and a Puzzle Piece will shoot out. Smash gourds to get some goodies, and find another barrel to shoot you back. Next, pound the detonator to blast an opening into a mine. Use another barrel to return to the background and enter the mine.
Make your way through the cave. When you reach some platforms leading up, crash into the rock wall to the far right to open a hidden area with a Puzzle Piece inside.
Continue up through the cave and then out to a large area where you are riding on top of a mine cart. At the second set of bananas, jump up to get the K KONG letter while avoiding the Squeeklys.
Just after the checkpoint, drop down after the wooden platforms drop. Roll left into a small cave, which takes you to a bonus area. Here you must jump on a bouncy platform as it moves left and right and collect coins and bananas in the air. Get them all and you will leave with a Puzzle Piece.
After exiting, continue to the right. You will end up on another mine cart. As a crystal falls from the ceiling and breaks the track, jump into the air and grab the O KONG letter. Make sure you land back on the cart again.
As your cart heads down a tilting section of track, be ready to jump at the end and land on a rickety platform. As soon as you touch it, it will start to fall, so quickly jump up to get the N KONG letter and then jump into the nearby barrel to continue.
You fall through a mine shaft. Jump to the right before a platform falls down, then jump to the left where the platform was and land in a barrel that will shoot you to another bonus area. Here you must jump to small platforms and collect bananas, coins, and a balloon so you can get a Puzzle Piece at the end.
After exiting the bonus area, get back onto a mine cart. Ride to the right, then jump into a barrel and go back to the left. As you reach the end, wait until the cart starts to fall and then jump across to the platform with a Puzzle Piece. If you jump earlier, you will land in the barrel. After getting the Puzzle Piece, quickly jump into the barrel before the platform falls.
After you get back onto a cart, jump into a barrel near the G KONG letter. It will shoot you to the letter. Make sure you land back in the cart. Jump over to the Slot-Machine Barrel and hit it to complete the level.