Galvares Ando focused on improving the reliability and maintainability of the Game Configuration Menu in the courselab/coral repository. Working primarily in Python, he addressed a critical IndexOutOfBoundsError and enhanced the language selection logic to ensure accurate enumeration of available languages, reducing the risk of user-facing errors. His approach involved refactoring the configuration UI code by introducing helper methods, which improved readability and modularity while making the codebase more testable and extensible. Leveraging skills in game development, internationalization, and UI development, Galvares positioned the project for easier localization and future feature expansion, demonstrating thoughtful attention to long-term maintainability.