TL; DR: Proton for Linux is able to run this game without crashing, but with a few hiccups.

Hmm. After hearing about the problems this game has on Windows, and seeing how Proton (for Linux) made Unlimited made it more stable than on Windows... I decided to give Unmasked a try, too.

Indeed, as I thought, Unmasked didn't crash a single time during my campaign mode playthrough. There were a few horrible - yet brief - lag spikes, but that was the extent of the problems.

If you want to give this game a try, playing on Linux is a great option, especially with everyone switching over now.

Even at a price point of $2.19 this isn't worth it. Unrunably buggy.

Coudn't get it to work