This design document provides readers with a clear understanding of the motivation behind this game. It is well-structured, and provides specific detail where needed. The concept art adds great value to the document, as it helps readers deeply understand the game's visual inspiration and direction. The raccoon character design is fantastic, and will draw players in immediately.
My one note for this team is that there are a number of complex mechanics that will need to be created in a relatively short period of time. It will be important to remain mindful of scope as you move forward. That being said, I appreciate that this design document references places where the team will cut content if needed based on time, indicating that the team will keep scope top of mind. Wishing you the best of luck as we move forward!