Thank you for the feedback! An extra ammo has a 10% chance of dropping on each basement level, so they are pretty rare. The view range I would like to have done it differently, but due to time and technical constraints (I'm a newbie on Gamemaker) I've done it this way, it is something I would like to work on. 3D Audio wa something I wanted to do but, again, time and technical contraints.
I might work more on this game and fix those things and release a new version! Thanks!