

Game always crashes after finishing a stage.
Game has slight stuttering, particularly noticeable in the opening movie.
Game always crashes at the end of a stage.
This game is abandonware, it hasn't been updated in almost two years and still no word on the console ports they promised would come some time after launch (the port was supposed to come out on last gen consoles...) It also has a pretty awful english translation. I wouldn't recommend you buy it, let alone play it through Proton.
Crash after completion of level
Well honestly I'm not sure, but it seemed like some of the game logic might have been subtly affected. For example, it game me a mission complete when I'm pretty sure I didn't deserve it, and I didn't notice and food drops this round. Otherwise? Runs perfectly from what I tested.