High level of completion in terms of a student project! You can explore the map, get upgraded, open up a chest, and even engage in boss fights!
To make players more used to the operation, you might want to increase the size of the bullet (or maybe make it an upgrade option). The bullet size is relatively small as the shooting angle is very sensitive to the mouse input. And I wish to see more skills, loots, and upgrade options for sure! Since the title is "the binding of dead souls" and I do wish to see more soul-related skills XD