Few comment, mostly for Linux.
- The zip file should unpack into a new directory, not into same directory. I.e. It should unpack into Terra Nil, not into my current directory and pollute the content with random files.
- It would be nice if the main binary file had an executable bit set out of the box in the archive. This can be done with zip, and definitively with tar.xz
- No option to play with vsync. The main menu is 600 fps, and the game is 180 fps. It is nice that I can do it, but option to limit fps would be nice for laptops / battery operated devices. This happen with both OpenGL and Vulkan renderer.
- Game works perfectly with Unity's Vulkan renderer (-force-vulkan). I would suggest making it a default (in Unity, go to project settings, to Graphics, then Linux graphics API, and set to manual, make Vulkan first, OpenGL second).
- No option to launch in windowed mode or on a specified monitor. Would be nice to maybe have a shortcut for that.
Other than that looks perfect. It even works perfectly on my weird monitor (1920x1920) with its weird aspect ratio.