Hidden sticker packs
Hidden sticker packs are found under, near, or around green banana bunches. To obtain these hidden treasures, find a green banana bunch, and use Donkey Kong to slam the ground (hold Down and press B). You should see a tiny rectangle bouncing on the ground. Collect it and then turn off the game. Turn the game back on, select the "Print" option at the main menu, then go to "Sticker Book". You should find a small picture on one of the pages. Press A on one to print it. Note: This requires a Game Boy Printer connected to the Game Boy Color via a link cable.
Lots of lives
First go to the very 1st level of the game and go into the treehouse get the balloon and get out of the treehouse jump on one tree and the other andtheother dont stop keep on going you will find lots of balloons 2 red ones and one green
When you start Barral Cannon Cayon on the first leval jump up on the Mountaion above were you came out and climb to the top and jump into the barral you will land on a tree top than jump into the next barral.than you will go throw a serias of barrals and land on a tree,than jump of the tree to your right and your half way throw the leval.
Unlock Hero Mode
Complete the game with 100% then start a new game and select two player mode to access Hero Mode. You only play Diddy Kong and there are no Donkey Kong Barrels, and Checkpoints, making for a really hard game!