Use Tiny and shrink to enter the fairy-shaped stone building in the main hub. Collect the camera to start photographing the fairies hidden in the game and unlock the "Mystery Menu" options.
Find and photograph two fairies with the camera to unlock the DK Theater option at the "Mystery Menu". This option allows all the animation sequences to be viewed.
Find and photograph six fairies with the camera, then locate Rambi the rhino, and Enguarde the swordfish to unlock their bonus stages.
Use a Gorilla-Grab to operate the lever in the Frantic Factory area, then play the original Donkey Kong game. Successfully complete all four stages, then play once more and complete the game to collect the Nintendo Coin. Then, find and photograph six fairies with the camera to unlock the original Donkey Kong option at the "Mystery Menu".
Collect at least fifteen Banana Medals, then visit Cranky to play the Jetpac game. Get 5,000 points in the game to collect the Rareware Coin. Then, find and photograph six fairies with the camera to unlock the Jetpac option at the "Mystery Menu".
Find and photograph ten fairies with the camera to unlock the Boss Battle option at the "Mystery Menu". This allows any Boss that already has been defeated to be fought again.
Find and photograph fifteen fairies with the camera to unlock the Krusha In Multi-Player option at the "Mystery Menu".
Find and photograph all twenty fairies with the camera to unlock the Cheat Mode option at the "Mystery Menu". This allows unlimited items during a game.
Find and collect forty Blueprints and bring them to Snide to unlock eight bonus levels (Batty Barrel Bash, Beaver Bother, Big Bug Bash, Krazy Kong Klamor, Kremling Kosh, Peril Path Panic, Searchlight Seek, and Teetering Turtle Trouble).
Look at the hair color of a Kasplut when one is encountered. The color will reveal what color Blueprint he is holding. Green hair indicates a green Blueprint. If the Kasplut has white hair, then he does not have anything.
Go to the first level in adventure mode, where you find Diddy. Locate the big pad with King K. Rool's face in front of Funky's Place. Stand on the pad and press Z. You will be transported to a "battle arena", where you must defeat a group of small enemies. Once the timer runs out, you will receive a crown and have ability to play two multi-player games (a third-person death match-like game, and a multi-player version of the Battle Arena).
Select a character, then press Analog-stick Up or Down.
Successfully complete the game after collecting all bananas to view the normal ending, with an extra sequence with K. Lumsy taking the Kongs for a ride. Successfully complete the game after getting all the collectibles to view the normal ending, K. Lumsy sequence, and an extra sequence featuring Cranky.
- Restore watermelon meter
When low on health, get next to a "Tag Barrel", jump into the barrel and exit to replenish your watermelon meter.
- Swim faster
When swimming above water, hold B to swim faster.
- 201st Banana
Collect all 200 known Bananas so that Donkey Kong gets his hoard back. After collecting all 20 Banana Fairies, a message requesting you to visit the Head Fairy will appear. Visit her with Tiny and she will show you the way to the 201st Banana.
- Rainbow Coins
Locate the dirt mounds marked with "DK" scattered throughout the game. Stand on top of a mound, then hold B to attack and send a shockwave to destroy the mound. A large Rainbow Coin will appear that results in five Banana Bunch Coins for each Kong.
- Quick level strategies
- Jungle Japes
First, swing on the vines and pound the gate switch. Collect the Banana Coins around the DK Pad. Buy DK's Coconut Shooter. Do not forget to talk to Diddy. Shoot three Coconut Switches. Get the Blueprint and give it to Snide. Buy the Baboon Blast from Cranky. Use Rambi to smash the huts and the painting of Rambi. Pound the DK Switch. Finally, use the DK Pad to reach the Barrel Blast.
- Angry Aztec
First, get the Bongo Blast from Candy. Open the Guitar Gazump Door with Diddy. Get the Strong Kong from Cranky. Get the blueprint and give it to Snide. Free the llama. Free Lanky in the llama temple. Navigate the sand tunnel. Feed the Revolving Tower with Diddy. Enter the Temple.
- Rools Frantic Factory
First, pound the switch to open the hatch. Learn the Gorilla Grab from Cranky. Barrel Boost to cue the arcade lever. Clear Level 4 of the DK arcade game. Pound the floor switch to open the gate, then pound the numbers. Gorilla-Grab the R&D lever and fight through the Battle Arena. Enter the High Voltage Building to turn on the machine. Enter the machine. Finally, find and return Snide's Blueprint.
- Gloomu Galleon
First, open the Main Areas. Win the Rareware Coin from Cranky Light the Lighthouse. Be a hero and free the Seal. Race the Seal. Explore the Sunken Ship. Find and return Snide's Blueprint.
- Fungi Forest
First, get the Super Simian Slam from Cranky. Shoot the switches with all Kongs. Get to the top of the mushroom. Go to the Kong Pad and play the Bonus Game. Find and return Snide's Blueprint. Go to the Bonus Barrel in the house and pull the three levers. Finally, visit Funky's Store.
- Crystal Caves
First, get the Ammo Belt from Funky. Get the upgrade from Candy. Blast to the Bonus Game. Cue the Music Pads with Diddy. Negotiate the revolving maze. Bomb the bees. Match the Kong faces. Open Snide's Hideout with Chunky. Do not forget to find and return Snide's Blueprint.
- Creepy Castle
First, get the Sniper Scope from Funky. Get the upgrade from Candy. Get Cranky's Super Duper Simian Slam. Open the tree and get the Blueprint. Shoot all the targets. Pull the levers for a mine cart ride. Put together the face puzzle. Finally, explore the library.
- Hideout Helm
First, assemble all necessary items. Climb the hill with Lanky. Blast the Pineapple Switch with Chunky. Shrink Tiny to enter the machine room. Pull the lever with DK Rocket. Diddy through the DK Stars. Punch the gates with Chunky.
- Angry Aztec
- Defeating K. Rool
After collecting the Rare Ware coin, Nintendo coin, and 100 golden bananas; freeing K. Lumsy; and completed Hideout Helm, you will get access to the final battle with K. Rool. You have to fight in a boxing ring and hit K. Rool four times with each Kong, with round times of three minutes. If you lose any of these rounds, you have to start over at Donkey.
With Donkey, K. Rool will jump up and slam the ground, causing shock waves, like Kasplat. Four barrels will appear. Jump into one of them and fire at K. Rool when he lifts his arm and yells "Thank You" to the audience. Do this four times.
With Diddy, K. Rool will throw his boxing glove. This is hard to avoid on the ground, but easy once you have got into the Rocket Barrel. Once in the Rocket Barrel, fire peanuts at the targets on the four lights at the top of the ring. Hit him with all four lights.
With Lanky, K. Rool will have a light fixture stuck on his head. All he can do is run around the ring. Four numbered switches will appear outside the ring. Run to where you can get a clear shot, then press B to push in the number. A barrel will appear next to Lanky outside the ring. Press B to pick it up, then throw it into the middle of the ring. A giant banana peel will appear out of the barrel. Four trombone pads will appear on the ground in the ring. Stand on a trombone, then wait until K. Rool is a straight line away from you. Play the trombone, then K. Rool will run at you from where he is standing. If your timing is good, he will trip on the banana peel. Do this four times.
With Tiny, K. Rool will pound the ground as he did with Donkey. Wait until he pounds the ground a few times, then he will start yelling in pain. A barrel will appear. Turn small, then run into the hole in his left shoe. Inside, you will have your feather bow. His toes will attack in patterns. Watch them and when one wiggles, it is going to attack. When a toe rises, fire the crossbow at it. Once you hit it enough times, it will turn red. Get into his shoe and make all four toes red.
This is the last battle and is a little more complicated than the rest. K. Rool will turn invisible and bounce from rope to rope, but you will still see his shadow. Hit the switch and four Chunky pads will appear. Press Z on one to become invisible, then jump into the barrel to become big Chunky. You have to have very good timing to do this. The first two times K. Rool will just run at you. Primate Punch him (hold Z and press B) just as he approaches, and you will hit him. The third time, he will be invisible. Primate Punch him again. The fourth time, he will be invisible and swerve back and forth. If you hit him, you win.
- Swim faster