I'm searching for a 3D game engine which allows me to write a game completely in C#. Thus I found Unity3D, but all the tutorials and documentation are speaking about a visual editor and the Unity IDE in which you click and point around to create scenes and scripts.

I don't want to do that. I prefer full code coverage over designers abstracting things away from me.

  I'd like to only write pure C# code from scratch or if required the Unity scripts as an addition. I couldn't find any explanation or documentation about doing so.

Is it possible to create Unity3D games by using C# only and all the time or should I better search for another engine?

I'd like to write a game completely in C#. In my search for an engine, I found Unity3D, but all the tutorials and documentation are speaking about a visual editor and the Unity IDE in which you click and point around to create scenes and scripts.

I don't want to do that. I prefer full code coverage over designers abstracting things away from me. I'd like to only write pure C# code from scratch or if required the Unity scripts as an addition. I couldn't find any explanation or documentation about doing so; how can I build a game using Unity and making minimum (or no) use of the visual editor?