Thank you for playing!
Thanks for reporting the text bug. There was a problem with the font in a non-Japanese environment. Implemented language switching to English! (Option->3rd Tab->Language)
I think your ideas regarding UI options are very good. I've implemented this too, thank you!
Regarding flashlights, it is difficult to resolve issues with shadows and light shafts, so we appreciate your patience for a while.
Regarding M4A1, we were thinking of implementing it as a secret weapon. I would like to be able to use it in other modes later.
Thank you very much again!