Developed the foundational Player Health and Death State System for the onirise/Failsafe repository, focusing on core gameplay mechanics in Unity using C# and object-oriented programming principles. The work centered on implementing a modular health management system that processes damage and transitions the player to a defined death state when health reaches zero. This architecture was designed for maintainability and future extensibility, enabling straightforward integration of features such as respawn and post-death flows. Emphasis was placed on testability and clear commit traceability, laying the groundwork for robust death-related gameplay while prioritizing clean, modular code without addressing major bug fixes during this period.