This level can be tough, since waves are constantly crashing against the shore. If you are not behind cover, the waves will wash you away. The first Puzzle Piece is inside the treasure chest near the start of the level. After getting it, wait behind the rock for the waves to crash, then run to the right.
Stop behind rocks as you go to protect yourself from the waves. As you approach the K KONG letter, jump off the back of a Snippys to get some extra height so you can reach this letter. Continue to the right. As you cross some open areas, look for red buttons. Pound them and a piece of stone will rise up and block the waves for you. Once the wave passes, keep moving to the right.
As you enter a small cavern, jump up and grab on to the grassy ceiling. Climb across, avoiding a jumping Nibbles, and drop down to get the O KONG letter. Hang out here until the wave passes, then take off running to the right.
When you reach the hull of a shipwreck, pound on a piling and another one will pop up, along with a Puzzle Piece. Get it along with some bunches of bananas here.
Just to the left of the Puzzle Piece, pound a trapdoor to drop into a bonus area. Use four barrels here to shoot around the area, collecting coins, bananas, and a balloon. Get them all and you will receive a Puzzle Piece.
After moving past the checkpoint, enter a cavern and climb along the grassy ceiling. Drop down next to a treasure chest and pound it open to get a Puzzle Piece.
Keep climbing along the ceiling past jumping Nibbles, and continue past the N KONG letter. Pick up the DK Barrel to get Diddy Kong (if you don’t already have him); then head back to the ledge to the letter’s left. Roll to the right to get the N KONG letter, and then jump in midair while rolling to get back to the other side.
Continue to the right until you reach a washtub. Pound the ground by it to release lots of bananas and a Puzzle Piece. You now have to move across a long stretch of open ground. Run to the right and quickly pound on the red button to bring up some rocky protection just in time to stop a wave from washing you away.
Keep running to the right, stopping only to take cover behind rocks. As you arrive at another shipwreck, pick up the barrel, jump onto the Squid Shot, and throw the barrel at the bag to release a coin and some bananas. Then jump onto the Squid Shot on the right side. From there, jump to the left to get the G KONG letter. Finally, open the large treasure chest to the right to reveal the Slot-Machine Barrel. Hit it to complete the level.