Even you get the game running on linux, audio issues will catch you. The game crashs.
Let me tell you how to run this game.
yaourt -S monogame-git mono wine-mono
Get newest wine and mono and monogame, Create new wineprefix, Find a replacement of "d3dcompiler_47.dll" copy to current game directory whichs another game works great.
And do not install .NET 4.6.2;
Now you probably running great but still has the audio issue crashing you.
Walt, Could you just disable audio system for linux user as temporary workarounds?
I tried to disable audio on wine, the result is when start game, crash instantly.
The game code quantity looks are even worst than unity engine games.
I have to say, BossConstructor runs stable than Cosmoteer.
EDIT:
Do not running this game with Intel GPU, it will got blue screen.
EDIT2:
If we have selection for DXD11 or DXD9, then we choose DXD9. Of course, OpenGL are betters.
Error log: http://paste.ubuntu.com/26077935/
EDIT3:
The game always tell me "Another program is already using UDP port 35862 and must be closed before you could play multiplayer". no matter its occupied by another program or not.
EDIT4:
After I remove some ion beam sound effect, when I attack enemy that wont crashs.
However I still got some mystery crash.
http://paste.ubuntu.com/26077929/