Using mousewheel for spell access is okay but you should be able to exit the menu with something other than mousewheel aswell like ESC.
I dont know if the game continues after you kill the first enemy but I couldn't talk to the NPC anymore. I tried twice so I assume that's how it is.
Definitely add on option to remove/reduce headbobbing because it bobs way too much for the amount you step forward.
I really enjoy the aesthetic of the painting cutouts and the voice of the NPC. Keep up the good work!