Daniel Tolnai contributed to the PathOfBuildingCommunity/PathOfBuilding repository by developing an enhanced defense calculation feature that improved the accuracy of in-game damage mitigation modeling. He implemented a conditional calculation flow in Lua, ensuring armor defense types were computed before miscellaneous calculations, which addressed miscalculations in scenarios involving spell suppression and evasion mastery. His work included optimizing algorithmic dependencies and refining code hygiene to reduce edge-case errors. By focusing on dependency-aware calculation ordering and targeted logic corrections, Daniel delivered a more reliable and maintainable calculation pipeline, demonstrating strong skills in Lua programming, algorithm optimization, and game development within a complex codebase.