For those following this guide, and encounter the error "Missing wine-mono". Use the wine runner "wine-ge". GE's version of wine includes wine-mono.
Other problems I encounter and their solution:
- White screen when booting game (Black ops 2 in my case). Solution was to move game files to another drive.
- Blurry text in Black ops 2. My solution was to reinstall Lutris from a binary .deb package, and move the BlackOps game files to Lutris' c_drive folder.
edit:
I don't understand the difference between installing Plutonium through the .exe vs installing from Lutris' prepacked Plutonium https://lutris.net/games/plutonium-launcher/. My latest install on Debian is working with installing from the prepacked Plutonium.