This is another ride in a mine cart. When you reach the spot with two tracks, jump up to the top track and be ready to jump out at its end to get the Puzzle Piece and then drop down into another mine cart.
After jumping over some Tiki Buzzes to get a balloon, be on the lookout for a barrel. Jump into it and it will shoot you to the K KONG letter. Be careful to land back in your cart and continue on.
As you continue, look for a barrel down low at the end of a track. Jump straight up out of the cart and land in the barrel to enter a bonus area. Clear out the bananas, coins, and a balloon to earn a Puzzle Piece.
Once you are back in a mine cart, ride it through a narrow cave. As you emerge, jump up and off of a Tiki Buzz to get the Puzzle Piece before landing back into your cart.
When you reach two tracks, jump into a cart on the higher track and ride it to the end; from the track’s end, you must jump up to get the O KONG letter and then land in a cart. When you see some grass overhead, jump up and grab it.
Hold on to the grass hanging below a mine train. Drop down at the checkpoint and pound the nearby plant to find a Puzzle Piece. You can also throw a DK Barrel here to get Diddy Kong.
Keep riding the mine carts. You come to another spot where you must hang from the grassy underside of a mine train. Ride it to the track’s end and drop so you can grab the N KONG letter and then land on another mine cart.
Right after getting the N KONG letter, ride the short track to its end to get the Puzzle Piece. Be ready to jump across to another cart on the next set of tracks.
In this new cart, you will jump onto a Tiki Buzz and then jump from it into a barrel. This will shoot you to a cart on a track in the background. Ride the cart to the track’s end, where you jump off to grab the G KONG letter and land in a barrel. It will shoot you back to the main level, where you can continue to the Slot-Machine Barrel. Hit it to complete the level.