Dungeon Danger is the first castle-themed level. Diddy and Dixie must climb chains and jump from several small platforms to reach the top of the level. The Kongs encounter Klingers on the chains and numerous Neeks, Klampons, and Spinies on the ground. There are banana trails throughout the level, and they lead to items such as Banana Coins, KONG Letters, and an Extra Life Balloon.
The Kongs begin the level on a solid piece of ground with a ledge ahead of it that they can climb to progress. An alcove is ahead of here that contains a DK Barrel. On the other side of the alcove, the primates can discover a few Neeks and a small ledge. After they pass the third Neek, they approach a chain that they can climb to reach the second floor of the dungeon, where there are five separate platforms that they must travel along to reach the rightmost side of the area. A Klampon walks on the third platform in this area, and a hidden section of the level is located under the pit immediately after the fifth platform. In this hidden area, the Kongs can find the letter K and an Extra Life Balloon that hovers over a pit, which they can drop into the reach a chain with the beginning of the level below it. Once the primates cross the pit after the fifth platform, they reach a solid ledge with a straight, vertical chain above it. The heroes can climb to the third floor of the dungeon with this chain, where there are some chains dangling from the ceiling. Bananas and a Banana Coin are located right under the chains.
Four platforms with gaps between each of them are farther below the chains; the first and fourth platform hold Neeks. After the Kongs cross the small pit after the fourth platform, they land on a large ledge with a Spiny on it. A set of chains dangle above here, and a Klinger climbs along the right side of it. The Kongs can use the chains to reach the fourth floor of the dungeon, where there are five platforms lined up with a pit between each of them. Zingers hover between the last two abysses, and a Spiny and a Klampon also march along the last two of the platforms. If they drop into the pit after the second platform, they access a hidden area with an Invincibility Barrel, a DK Coin, two Spinies, and a Zinger in it. A Barrel Cannon is also at the end of this area, and it can blast the Kongs onto the chain at the end of the area. If they climb to the top of this chain, they reach the fifth floor of the dungeon. The level's Star Barrel is immediately to the left of the top of this chain on a solid piece of ground.
After the primates pass the special barrel, they access a wide area full of platforms with chains on them. If they search through this maze of platforms and chains, they can find a Kannonball, a Banana Coin, the letter O, and, at the very bottom of the room, a pair of Neeks and a Kannon. After the primates climb to the northwest side of the area, they can find a set of chains with two Klingers sliding along them. Once at the top of the chains, they can reach a solid area of ground with a Klampon on it. There is a small pit ahead of here, and once it is cross, the primates reach a large platform with two Spinies on it. A chain hangs over the beginning of platform, which can be climbed to reach a higher area containing a pit and the letter N.
If the Kongs pass this chain and head to the other end of the platform, they can find a larger set of chains that are covered in five Klingers. A pit near the bottom of the chains can be crossed to reach an additional Spiny and more Klinger-covered chains that lead up to an area with a hidden Bonus Barrel in it. If the heroes climb up the previously-mentioned chains with the five Klingers on them, they can progress to the seventh floor on the dungeon. The letter G is to the right after a pit from the top of these chains, and four large platforms are to the left of it. One of these platforms holds a Klampon. After the Kongs cross the pit from the fourth platform, they can reach a ledge with a chain above it. Four platforms are to the right of the top of this chain; the second of them holds a Klampon, and the last of them carries a Neek. Once Diddy and Dixie cross the large abyss after the fourth platform, they land on a ledge with a spring on it. If they bounce on the spring, they complete the level.
Items and objects
After encountering the first Klinger, the Kongs must continue to the right and jump down to a banana in the second gap afterward. This causes them to land into an Invincibility Barrel and in an area where the DK Coin appears just after a Spiny.