How to import from Blender 2.8 to Unity

How to import from Blender 2.8 to Unity

1. Save your object to somewhere in the scene.
2. Do the UV and the Lightmap. In the UV Editing workspace, you can have a lightmap auto-generated or put it up manually. This may be necessary if the automatic creation of a lightmap through Unity doesn't proof to be good. No lightmap is needed for dynamic objects anyway.
3. Apply all modifiers. (For many objects select and Object -> Convert to mesh)
4. Combine the objects (fewer in-game objects in Unity!) (use Ctrl+j)
5. File->Export->.FBX (-z forward, y up) Tick the box for "Selected objects only", so you don't get the camera, light etc. too. Save to the Unity Assets/Models folder.
6. Select in Unity and adjust the options. By default, "Generate Lightmap" can be used with a medium margin.
7. If your object shall be static, mark it as such and bake the lightmap and check for overlaps with your new model added.