Thanks for the feedback! The issues with the projectiles not working just comes to not enough play testing being done. For instance, bullets get destroyed when they hit any object, which includes an enemy's gun. Fixing those things just weren't high enough on the priority list.
The lighting was somewhat intentional, although in hindsight maybe it was a bit too hard to see. Anyway, again, thanks for the feedback! I'll start working on those (of course, I won't submit the changes until the game jam is done).