Expert level in 2D means feel and pixels are measured, not eyeballed: a jump has a height in tiles and a coyote window in ticks, a camera has a lag in pixels, a pixel-art screen has an integer factor ...

A guide for Claude (or any coding agent) working in a Unity project. It covers how to drive the open Unity Editor from the terminal, build and edit prefabs and scenes with C# scripts, enter Play mode ...