Everything made in Blender not rendering (i have Blender installed)

[PFnove]

I just want to play this game, and nothing renders. I tried everything, but I can't fix this issue.
Do i have to install some stuff to make it work? (Blender already installed)
Also i can't hear the music.

Images:

[HansenBerlin]

Click in the model files in unity, make any change to it and apply changes. Meshes will be rebuilt. Worked for me.