Really love the idea and the spritework is quite good. Some thoughts:
- would have loved a *dark* itch.io page theme, the bright white is like being flashbanged outside the game constantly! (Yeah, I could fullscreen, and I did, but it's still a small thing I figured I'd mention!)
- audio cues people have mentioned, but for something that hasn't been mentioned: I think I'd've liked to NOT be able to pick up health/ammo if you didn't actually need them. I ended up picking them up before I needed them and then having nothing to pick up when I *did* need them.
- I almost think that the split between seeing / darkness is *too* generous. It almost feels like darkness is pulsing, rather than *seeing* pulsing, y'know what I mean?
Overall though, I enjoyed my time with the game. Well done!