Thanks so much for such a honest and long feedback. I have added some melee weapons to support more interesting playstyles with a high risk high reward system, because you kill enemies with melee weapons faster.
Also for the thing that you can just play the game doing nothing, if you do so, you'll get much lower score, because killing enemies gives you much higher score than just moving, but if I develop the game more, I 'll probably add some kind of traps on the ground so you have to teleport through them.
I have no idea how I didn't notice that music doesn't loop. Which platform where you playing on? Thanks again for taking the effort and helping others improve