Worked on the foundryvtt/pf2e repository to address accuracy issues in combat roll calculations by refining how battle form modifiers are reconciled with attack rolls. Focused on game development and rule system implementation, the work involved fixing a bug where bonuses and penalties from battle form modifiers were not correctly applied when comparing to unarmed modifiers. Using TypeScript, the developer implemented and validated a targeted code fix that improved the reliability of combat outcomes and reduced edge-case discrepancies. The changes enhanced code maintainability and were clearly documented, contributing to a more robust and accurate rule system within the project.