Although this game has a Linux-native build available, Steam does not list it as having Linux support. This can happen if a game has an unofficial, unfinished, or unsupported build. You may need to force Steam to enable Proton for the game in order to run properly.
Square where early adopters of Linux back when Steam Machines V1 came out commissioning ports for a bunch of their Eidos (western) IPs. And then they stopped support for those ports when Proton came around