The art, music and 2d intro are really good. The gameplay could use some work. considering this just a game jam, there was probably no time, but just for the sake of leaving feedback, these are some that come quickly off the top:
A clear indicator of where enemies will come from, damage feedback(camera shake, red flash, sound effect, particles), audio when striking enemies, more health? (its easy to get swarmed and completely surrounded by mobs), sound indicators for when enemies spawn since this is first person and some come from off camera where the player cannot see them. directional damage indicator for damage coming from enemies not in front of the camera
in a nutshell, the presentation is top tier stuff. the gameplay less so