The turret that goes with the boss. It was intended to rotate independently, so I put it above the center point.
Initially I was working at a lower resolution
This is after doubling resolution. I hadn't done anything this detailed before, so I ended up just taking it one area at a time. Here's the top-back portion of the tank after detailing
Here's a version with the left and front finished
The last thing I completed was the rolling tank treads