Worked on the LandSandBoat/server repository to enhance combat mechanics by tuning the guard rate threshold within defensive systems. Focused on updating the skillDelta threshold used in Lua scripting to calculate guard rates, the changes aimed to deliver more accurate and predictable defensive outcomes for players without disrupting the core combat flow. The implementation maintained compatibility with the existing game development framework, ensuring that only the guard rate calculation was affected and no breaking changes were introduced. This targeted feature improved the consistency of defense mechanics, supporting ongoing balance efforts and increasing maintainability through clear, well-scoped code and explicit commit documentation.