Within minutes several things happened including overheating and more

To begin with my car is overheating. I got a diagnostic that said my catalytic converter needed some TLC, but the mechanic insisted I needed a new thermostat so I replaced my thermostat. Then my radiator had a broken nipple so I replaced that as well, I also had my oil changed all of that was in February. It seemed that everything was going smoothly until my oil light came on and then my battery light and then my car was overheating, so I pulled over. Checked the dip stick and there is zero oil in my car. So I put in oil. I drove about 12 blocks and the power and lights on my dash went out. The needles for the gas and thermometer went to E and C my radio stopped working my windshield wipers stopped working its like my battery died while I was driving except my head lights were on, the overhead light worked my heated seats work the electric mechanisms to move my seats work, my windows roll up and down. I am so confused. Please help. This all happened within minutes there was no warning before hand that I would have recognized.