Solid litte game!
Like the art style and the juicy effects in it.
I think the enmey should be more aggressive. They are now moving slow and turning extremely slow. I know that might be ensure that the player can pick up the bullet he throw. But low pace is toxic to a top-down shotter I think.
I checked another one-bullet top-down shotter earlier, he add teleport to the bullet to slove this design problem. I think that is a good solution. Maybe you should check this out.
FYI
https://mark-auman.itch.io/one-shot-in-the-chamber