Donkey Kong Country 3 (GBA) - K3 - Lemguin Lunge 

At the start, throw Dixie above a red Buzz to enter the B Barrel. The first bonus area has Lemguins coming out of the hole. Get past them within 15 seconds to find the B Coin. Back in the main area, you’ll find the “K” letter after a Skidda. The “O” letter is on the roof of a cabin with Lemguins sliding by. Throw an iron keg to backstab Koin for the DK Coin. After 2 Lemguin nests, go uphill to find the Star Barrel. The “N” letter is downhill right after the Star Barrel. After another Lemguin nest, the “G” letter is above a Skidda. A B Barrel stands in front of the next cabin. The 2nd bonus area has 30 stars. Collect them all within 20 seconds for the B Coin. Back in the main area, go uphill by one more Lemguin nest and you’ll find the goal.