This repository implements the Elden Ring Practice Tool, a Windows application that provides an in-game overlay with cheats, debugging utilities, and speedrun practice features for Elden Ring. The system works by injecting a DLL into the game process, hooking DirectX 12 to render an ImGui overlay, and reading/writing game memory via pointer chains. The architecture is a Cargo workspace with multiple crates: `practice-tool` (main DLL with overlay UI), `lib/libeldenring` (core memory editing and parameter access library), `lib/param-tinkerer` (standalone parameter editor), `lib/no-logo` (intro screen removal DLL), `lib/scripts` (injector), and `xtask` (build and code generation orchestration). Key entry points include `practice-tool/src/lib.rs` (DLL main), `practice-tool/src/practice_tool.rs` (ImGui render loop), and `xtask/src/main.rs` (build tasks). Data flows involve reading game memory via pointer chains, parsing game parameters from community-maintained Paramdex XML, and generating Rust structs and base addresses via AOB scanning. External dependencies include `hudhook` for injection, `imgui` for UI, `windows` crate for Win32 APIs, and `Paramdex` for game data definitions. The tool is heavily version-dependent, supporting 28 game versions with hardcoded base addresses.