Thanks for playing! I definitely have a better understanding now! There's a lot of parts that I hadn't expected to become an issue, and then things I added to make some stuff feel better ended up making other parts feel worse. It was a pretty tough balance.
Being able to use both weapons at once was definitely intentional. Some of the weapons required a bit more active thinking than others (bow charging, gun ammo/reloading, and to a lesser extent, the sword angle), so there was kind of a soft intent that you'd have one weapon you were constantly firing without having to think too much and then another that was a bit more intentional, but I left it in the player's hand to choose how they'd want to play it.
I didn't think about having any dialog after the boss, so that's a really good point. The ending could definitely use some extra work on it in retrospect.