Oh yeah you were actually supposed to find the AR15 in the house, that was intentional. Originally you'd find it at the gas station but I ended up deciding it'd make more sense to find it in the house so that you could fight your way through to the gas station. I'm sorry to hear that you ran out of ammo early on, even though we wanted players to be somewhat aware of ammo management nobody ran out of ammo during playtests. If you believe that it's a bug, I'll investigate it. Congratulations on finding the tower! I intended for the sign in front of you at spawn to guide you in where you'd want to go, if you felt like that wasn't clear enough then I'll investigate that as well. Thanks for your feedback and support!