Nice game, good work!
Some feedback:
- UI was a bit glitchy. I pressed settings and then restarted the game, but the settings menu was on the screen still. Not a big deal.
- It's difficult for me to tell where the player light starts/ends and where the environment light starts/ends, so it's hard for me to tell how which light source/direction I'm being damaged from, so I don't know which direction to move away from the light.
- There was a weird dark black goop on the ground occasionally. I wasn't sure what that was or what I could do with it. I don't think any of the tutorials mentioned it to me.
- Level 2 - There's some invisible colliders near some of the lights near the top-room's bottom-right corner?
- Level 3 - Invisible colliders in another light near the top room's bottom-right corner.
- I got stuck on level 3, since I couldn't find the last thing to open the door :(
- Levers are the same color as the ground, so sometimes it can be hard to tell where they are in the dark. It's easy for me to miss the shininess of items since I'm moving around often.
- Having some kind of indicator to help the player know how many pressure plates/levers they need to open the door would help, so I know that there's still something left in the room.
Regardless, I had fun playing and exploring around the dark rooms. I like the light effects, but I think it could use some more work to make it more visually accurate where light starts/ends. Good work!