Dmitriy worked on the qwrtln/Homm3BG-mission-book repository, focusing on standardizing Scenario Map Setup Instructions to improve reliability and consistency for cooperative game scenarios. He refactored documentation using TeX, applying technical writing and game design skills to align map tile arrangement formatting and clarify rules for tile connections and borders with official game books. This approach enhanced the clarity and accuracy of scenario setup instructions, reducing onboarding friction for new players and minimizing setup errors. By prioritizing documentation quality and maintainability, Dmitriy addressed technical debt and established a scalable foundation for future enhancements, though no major bugs were reported or fixed.