Electrical Equipment problems of the 1996 Mercury Mystique

I replaced the alternator last summer and I had to replace it again this summer. I had to replace my tail lights twice the brakes is always giving me problems. The window on the drivers side doesnt roll down. When it rain the floors get wet. I have a hard time putting it into gear and taking it out of gear. It stalls to cut on and drives really rough. I had to replace the tires numerous times. The speedometer went out and the temperture gauge as well. The ac dosent work and it takes a while for the heat to warm up car. Something need to be done about this.