It's amazing how much you achieved with such a tiny color palette. The navigation feels good, and I really liked the time-management mechanic.
However, the first playthrough can feel a bit unfair because your progress depends heavily on luck and on what you happen to discover. There doesn't seem to be much logic behind some of the decisions, so it may be worth adding clearer clues or a way for the player to make more informed choices.
Other than that, great work!