Yes one joystick. I would answer your question above but I don't know some of then

but I'll try
1. How many wheels does the robot have? 4
2. Where are the wheels positioned? 4 on each side...Not sure if you need more specific info on this
3. What kind of wheels are they, and what exactly is the tread surface material? The wheels are the ones from the kit As for the material I don't know
4. How many of the wheels are being driven and which ones? All 4wd
5. How many motors (and which ones) are driving the wheels? 4..But There was something with our arm its a pneumatic thingy so not sure if that counts or not. They are the ones from the kit.
6. What top speed (in feet per second) is the robot geared for? - if you don't know this, what gearbox is it using and what size sprockets are you using and what diameter wheels are you using? .....Thats a question Brian needs to answer...BRIAN WHERE ARE YOU!!
7. Are you sure the battery was charged and if you are sure, how/why are you sure? This was something brought up cause the arm was moving slower then normal. We need to try that as well.