I love stealth games, so this one was definitely a lot of fun to play! I beat it in the first try without getting caught once. ;) The trick seems to be to turn off your flashlight and never turn it back on again. :D At least I felt it was unnecessary, since I could still make out where I was going and where the zombies were even in the dark. Maybe you can somehow add some level of difficulty for us steath nerds (although it seems a lot of people in the comments had difficulty, so maybe it was just me...)
I also LOVE that you had controller support! I played it with my XBOX One controller and it worked great! I'm looking forward to seeing what this becomes in the future!