Room 404

Spoiler: Tricks Needed (1)

The trick needed is: exploiting Autopilot

Spoiler: Where the trick is used

1. To climb the slider at the front of the tallest building
2. To perform jumps using the slider at the front of the tallest building
3. To push in the window at the back of the tallest building (also known as Hercules, but really a variation on Autopilot )

Spoiler: Hint 1: First things first

Two balls need to be pushed before anything else. B pushes only one of the, someone else pushes the other.

Spoiler: Hint 2: Jumping

There are three different jumps that need to be pulled off, all starting from the same position (on the slider in front of the tallest building). There may be some intermediate steps that need to be done in between the jumps.

Spoiler: Hint 3: Jumping, step by step

1. The first jump works after a certain ball has been pushed to serve as a landing spot for B. By tapping the end of the stone ledge and then quickly raising the slider, B will perform a simple fall.
2. The second jump requires pillar-R to be stuck under a wedge, and the aforementioned window must also be pushed in. By tapping on pillar-R and then quickly raising the slider, B will reach new heights.
3. The third jump requires a second pillar-R to be stuck trying to walk into the space under the first pillar-R's head. By tapping on the second pillar-R and then quickly raising the slider, B will perform some daring acrobatics.