Treacherous Track is the fifty-fifth level in Donkey Kong Country Returns and Donkey Kong Country Returns 3D, as well as the ninth and final level in the Factory world. It is also the seventh Key Temple, unlocked by collecting all of the K-O-N-G Letters in the Factory world.
This temple features a gear that moves along a grooved path. Donkey Kong and Diddy Kong must guide along with the gear and turn all the red pendants to yellow in order to reveal a missing piece of the track. As the Kongs goes by with the rotating gear, platforms will pop out from the wall, some of which require the gear to be used to keep the Kongs safe. If Donkey Kong or Diddy Kong do not open a missing part of the track in time, the gear will fall off, and the level cannot be completed without that key item. Common enemies in this level include Tiki Goons, Tiki Buzzes, and Pyrobots.
In the Time Attack mode of the game, a time of 1:29:00 is needed to get a gold medal, a time of 1:35:00 for silver, and a time of 1:50:00 for bronze.
The Kongs begin the level heading into a barrel that launches them on a platform that is connected to gears. As the gear moves, the first pendant is right after the platform moves, with the missing part of the track replaced instantly. Next comes a platform that pops out from the background with a Tiki Goon and a Pyrobot, along with a trail of bananas and the second pendant at the end. After Donkey Kong and Diddy Kong touch the pendant, they need to hop back onto the gear and avoid the Tiki Buzz that hovers over the second missing track location. The Kongs then need to hop over a platform with a vase on it, and then duck low as the gear passes under a spiked-coated platform base. After that, Donkey Kong and Diddy Kong need to fire out of another barrel to reach the third pendant and reach the gear while avoiding the Tiki Goon next to the pendant, along with the Pyrobot on the upper platform further down. Next, the Kongs need to climb up the three collapsible platform - each separated with Tiki Buzzes - in order to reach the fourth pendant to activate the fourth missing piece of the track.
The Kongs then need to drop down onto the platform holding a Pyrobot, and then wait for the gear to pass through the platform to hop back on it. Immediately after, Donkey Kong and Diddy Kong need to duck as they pass under another spiky-based platform, and then rush over the next platform onto a low-leveled platform carrying a Tiki Goon. There, they need to rush and bounce high off the tire to hit the fifth pendant before the gear reaches it. Back on the gear platform, the Kongs need to rush ahead once again after they pass another tall platform with the Tiki Buzz far out. Before the gear platform reaches a high-leveled platform, they need to drop down onto the two low collapsible platform and then back onto the platform leading into the next platform that has a Pyrobot on it. Once Donkey Kong and Diddy Kong accomplish that platform, they need to bounce high off the tire to reach the tall platform ahead, and then touch the sixth pendant between two collapsible platforms and a Tiki Buzz hovering over it.
Using the last collapsible platform, the Kongs need to get over the tall platform ahead then hop back down to the gear platform and duck under a spiky-based platform. Next, the Kongs need to get over the three low-leveled collapsible platforms before the gear platform so that they can touch the seventh pendant while making it back onto the moving platform. Donkey Kong and Diddy Kong now need to leap over the platform with a vase and the two Tiki Buzzes hovering over the seventh missing track location to keep up with the gear platform to be able to duck under the next spiky-based platform. Afterwards, the Kongs need to pass the platform with the Pyrobot to the collapsible platform and over the three Tiki Zings to get to the tall platform. They need to wait for the gear platform to come and then drop between the two platforms to the eighth pendant and over the next platform to the gear platform once again.
Next, Donkey Kong and Diddy Kong need to bounce hard off the two Tiki Buzzes to get over the two spiky platforms, respectively, to get back safely onto the gear platform and duck under another spiky-based platform. Now the Kongs need to hop onto the collapsible platform and get over to the ninth pendant over a collapsible platform that has spikes below but with two Tiki Buzzes for leverage. Donkey Kong and Diddy Kong need to hop off the next collapsible platform onto a Tiki Buzz hovering over a spiky platform to reach the tenth pendant. Immediately afterwards they need to jump up two collapsible platforms to the eleventh pendant. After that, the Kongs need to bounce off the Tiki Buzz hovering over a spiky platform to a collapsible platform with the twelfth and final pendant to activate the last missing part of the track. They need to wait for the gear platform to reach the spot and hop on it to activate the pendant, then hop onto the Tiki Buzz over a spiky platform ahead to get back onto the platform. The Kongs now need to duck under another spiky-based platform and then let the gear reach the end. After that, Donkey Kong and Diddy Kong can collect the seventh Rare Orb.
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