World 4 — Great Ape Lakes contains six normal levels. Collect both Bonus Coins and the DK Coin in each stage, then claim the boss coin and Bear’s card rewards before leaving.
Jungle Jeopardy
After K, use the lower of the two moving ropes and drop at the banana to Bonus 1. In the first gap after the Star Barrel, look below the diagonal up-right cannon for a lower barrel. Its long sequence leads to Bonus 2. Near the goal, cross the Buzz to obtain the steel barrel, then throw it right beyond Koin. Stay left so that the rebound catches his unguarded back.
Footloose Falls
Before the Star Barrel, ignore the right arrow and cross the small rock platforms left for Bonus 1 and its eighteen stars. After G, cross the rocks and Bristles platform to the hidden stones and Tracker Barrel leading to Koin. Fetch the steel barrel there. For Bonus 2, follow the short banana trail into the small gap near Koin, then keep moving between the crumbling platforms and Booster Barrels inside.
Deep Reef Grief
At O, swim right between the Lurchins for Bonus 1. Search the outer edge and then the middle for all 32 stars. Beyond O, look behind the Lurchin to the right of the banana-arrow junction for the DK Coin. Shortly after N, ignore the left arrow and continue past the Bazzas to Bonus 2, a winding underwater route.
Karbine Kaos
As Squitter, pass the two Kobbles and build webs into the ceiling gap marked by bananas. Climb above the Bazuka’s fired barrels to Bonus 1. After the first descent beyond the Star Barrel, go left past the Bazuka for the steel barrel and carry it to Koin below. Beside N, take the cannon to the long horizontal rope and climb left past the Karbines for Bonus 2.
Simian Shimmy
Bounce from the Booty Bird carrying O into the hidden barrel above it, then follow the branches for Bonus 1 and its 27 stars. After N, use the Niknak to reach the upper branches for Bonus 2. The steel barrel beneath that Niknak is for Koin in the lower gap. Carry it down and rebound it from the left wall; the nearby cannon returns you to the main route.
Rockface Chase
After O, ride the cannon sequence to the horizontal ropes. Cross the two Klasp ropes, jump left onto solid ground and then right into Bonus 1. After G, the arrow points left: take the right ropes for Bonus 2. Return to that junction and follow the left route down to Koin. Bring the steel barrel to the wall behind him rather than leaving one branch unsearched.
Boss: Krazy Kaos
Wait for KAOS to rise and lose the electrical protection over its head. Use the extended blades as steps, then jump onto the exposed top. Avoid the boxing gloves during the climb. Ducking can evade the ordinary low hover, but the faster, lower movement immediately after a hit needs an active dodge. Three head hits finish the fight after its last movement.
Check the twelve level Bonus Coins, six level DK Coins and the shop rewards, save at Wrinkly, then continue to World 5 — Tin Can Valley.