I think you just did huge damage to the motor. You are supposed to stop the motor if the engine oil light comes on. If it turns out to be just an electrical problem, you can keep driving. When the valves start to tick, that is an indication that you don't have any oil pressure. When motors die after this, it is usually an indication that something inside got overheated by lack of lube and either permanently seized or swelled and seized for a bit and let go after cooling. Either way, drag the car to someone who knows and get it checked but I think it's humped.