Amazing art style, loved it. As others already commented, the first boss phase was beatable using the melee weapon's "dash attack", but the second I couldn't finish, yet. Thanks for adding a sensitivity control in the settings xD
In my first playthrough I just couldn't find the character and after realizing where he was, it was too late haha. Maybe a camera zooming out from character to the full scenario would be a nice detail adding to your game. Great job!