Thank you! We wanted to make it dark enough to where zombies could sneak up on you if you weren't careful, adding a lot of use to the flare gun and the flash when you fire the other guns. We also tried to capture the open-ended vertical level design of games like Hollow Knight and the Ori series.
The bugged wall was one thing that slipped through the cracks in the game jam build, but it'll be fixed in the next version after the jam is over!