To progress, you need to collect three pieces of a Rocket Ship. These pieces are typically found in different areas of the 3D environment, often requiring specific 2D puzzles to access.

- Locate Rocket Piece 1: This piece is often found near a stack of books. You might need to use a 2D platforming section to reach it, or push a 3D object to create a path.
- Locate Rocket Piece 2: The second piece is usually hidden behind a larger object, like a toy box or a curtain. A 2D puzzle might involve drawing a path on a page that reveals the piece in 3D.
- Locate Rocket Piece 3: The final piece is often guarded or requires a more complex environmental puzzle. For instance, you might need to activate a mechanism in 3D that opens a container in 2D.
- Assemble the Rocket Ship: Once all three pieces are collected, return to the designated assembly point, usually a workbench or a specific area on the desk. Interact with it to assemble the Rocket Ship.
CRITICAL WARNING: Chapter 6 Softlock Bug
Multiple sources ( boards) report a game-breaking bug in Chapter 6 related to the Rocket Ship pieces. DO NOT engage in ANY dialogue with the 'center cup' (or the central character/object related to the Rocket Ship assembly) BEFORE you have collected ALL THREE Rocket Ship pieces. If you initiate dialogue with the center cup prematurely, you may become stuck and unable to collect the remaining pieces, leading to a softlock. This bug has been reported on both PC and PS5. While a patch may address this, it's safer to collect all pieces first. If you encounter this bug, your only recourse may be to load an earlier save, which might not be far enough back if you haven't saved frequently.