This is a complete ARPG combat and progression framework built around the lessons learned from Diablo and Path of Exile. You get exponential damage scaling, diminishing returns on armor, hitbox/hurtbox systems that run in physics_process, and a full loot generator with rarity tiers and affixes. The anti-patterns section is gold: it warns against linear stat scaling, storing stats as nodes instead of resources, and the common AnimationTree pitfall of using the NOT operator in conditions. Includes pooled damage numbers, threaded inventory parsing for endgame stash tabs, and duck-typed combat detection so anything can take damage without inheritance hell. If you're building a loot-driven action RPG in Godot, this gives you the architectural skeleton that prevents the typical performance disasters.
npx skills add https://github.com/thedivergentai/gd-agentic-skills --skill godot-genre-action-rpg