why is there a large black rectangle at the start of each level? I can't see!!

I collected all the lunch items and didn't get an ending. smh unplayable. Jokes aside, this is a really fun game. I recommend using a gamepad for it.
also my achievements didn't add but that might've been my fault for not watching the credits. oops :/

Bro the gun is the final boss that's so cool! It's just really hard. Let's try hitting it with a wrench...