There are interesting ideas here, I like that there's some kind of sidequests in this game, like getting the bigger guns. The camera lags behind too much for me, I kept running into ghosts because the camera didn't give me much time to react. The final boss against the ship also could've used a health bar or something, and same with reloading (the cooldown on weapon shots was pretty long)
Cool overall idea and game though, definitely could be improved with some polish!