The Bunker

Knock over the army dude, at the start, and use him to leap to 2 Decorations above the starting point. The next room contains an electrified pillar that pops out of the ground--leap from it as it rises to grab 2 Objects--one right above, another to the right. Once at the large spinning wheel, jump on top of it (by riding the thin opening, then jumping) for an Object and Material. You'll grab another Object as you run through across the spinning platforms in the electrified corridor. Bounce off the first enemy thereafter for an Object above. When you reach the room with the two large wheels, leap from the left one as it rotates clockwise to reach a hill in the background, to the left. Follow it to grab a Material and Object. Return to the wheels and grab the key between the two (by jumping from one as it tilts toward it). Just after the two wheels, but before the next checkpoint, climb a couple of hills in the background to find a Sticker Spot directly above the wheels. Plant the appropriate sticker there for some items.

As you cross through the hallway with the electrical barriers that pop out, leap from a short ledge to grab an Object after the second barrier. Bounce off the second enemy you come across for an Object above, then bounce off a second enemy to reach the hill in the background where you'll find an Object, Decoration, and Sticker. After riding the mine cart down the tilting ramp, grab the easy-to-reach Object just before the checkpoint. At the next large wheel, leap from the entryway again as it spins upward to grab an Object and Decoration in the background ridges. Then continue to ride the top of the wheel around to find 3 Decorations and a Sticker on a ledge to the right, as well as an Object in the corner below. After dropping to the conveyer belt, head left for an Object. You'll find another Object and 2 Decorations between the electrified barriers as you cross the conveyer belt. When you reach a large TV overhead, grab the nearby lever to split it apart, revealing an Object. As you traverse the huuuge spinning wheel, you'll find a Material as you cross the platforms just before dropping from it, to a conveyer belt below. Once on this second conveyer belt, head left to find a Material, then right for another Material.