Install playonlinux from your distribution. Then, through playonlinux, install Windows Steam.
Only a few tweaks need to be made in order to run SoaSE:R. Open the configuration
- In Video, set Offscreen Render Mode to
backbuffer
(NOTE: This is not required in windowed mode, as far as I know). - Install d3dx9 and dotnet45
- Paste
export PULSE_LATENCY_MSEC=60
into Misc -> Command to execute before running the program