Thanks! That's some high praises. I think it has a long ways to go to being perfect though, especially with how the partner follows you around. I'm glad you enjoyed the boss; I had a lot of fun designing him (though feeling bad for making him so hard initially, this past week I've been toning him down).
I checked my code and forgot to uncomment out a line that of code that lets the credits scroll. I'd been using it for making the trailer footage beforehand. As for the Quit button, that *does* work... but not if you were using the jump button, which cancels it out back a menu. I realize now that's not intuitive and can see where the confusion would come from.
Hoping to get Chapter 2 and additional content done in the future, hopefully I can keep improving it! Thank you for taking the time to play it and I'm very glad you had fun.