I tried to illuminate the walls, but I could still not see where I was suppose to go. I believe I pretty fast ran out of ammunition.
Viewing post in Paint The Darkness jam comments
I'm sorry to hear that. Since it's a jam game the difficulty can escalate very quickly due to limited time for creating more levels or general balancing. You can always restart and try again. In the end, it has a mix of the puzzle genre and it's supposed to be hard to figure out but at least hope a bit refreshing once you find the right way :)