Thank you for the detailed feedback! In retrospect, the field of view dithering effect may be a bit harsh in spots. I will compare bigger brick patterns, as well as alternate ways of implementing the blindness effect.
Regarding your save, have you attempted to erase your save file through the pause menu? [ By pressing 'C', 'E', 'L', 'Enter' on a keyboard or 'Start' on a gamepad ]. It should be the third option down... although it does seem to temporarily erase the menu text when used.
I'm glad you enjoyed it!