No major issues on desktop
Crashes when opening About window
Works fine on Linux PC
Seems to be too broken on Steam Deck
Crashes or stops responding in certain situations
Sadly it's not working correctly on Steam Deck
Game crashes if using proton 5.13-6 on certain game sections, to solve the problem, either use proton 4.11-13, or use "PROTON_USE_WINED3D=1 %command%" for Intel iGPU, or "PROTON_USE_WINED3D=1 prime-run %command%" on nvidia prime hybrid mode setups, after that the game worked without issues on proton 5.13-6.
Game crashed if not launched with "PROTON_USE_WINED3D=1 %command%" or for nvidia prime users "PROTON_USE_WINED3D=1 prime-run %command%" while using Proton 5.13-6, works without trouble on Proton 4.11-13 without the workaround above. After that, game worked without trouble.
Requires LC_ALL=ja_JP.UTF-8 %command% launch option to render Japanese text.