Hey,
Thanks for playing my humble game and for the great feedback. Yeah, I've been aware of the ammo problem, and am planning on a better system in the future. Melee is planned at some point as well, probably when I overhaul/replace the character controller. The menu options was definitely an oversight, and should be a simple fix for the next patch. I'm not sure if I'll be able to implement a brightness slider but I'll definitely look into it!
Cheers