A older model of the jackhammer, modified to be better. It now has, extra armor on the turret and the body of the tank, a Swedish 1.4 second auto reloader, a larger cannon, 2 turret mounted MGs, a secondary turret that can automatically lock on to enemy vehicles, and a slightly larger and stronger engine.
Though at a cost. As this is an older model of the jackhammer it has little to no modern equipment, such as the turret needs to be manually rotated by the crew making turning the turret very slow. It also has crazy recoil. If you fire in the wrong direction the tank can be moved quite far, so having the breaks on when firing stationary is needed. Also the mechanism for moving the main cannon is severely strained due to the weight of the larger cannon making it, also slower. The weight of all the modifications also put a lot of pressure on the suspension and wheels so expect it to struggle to climb high angles.
Well that is all I got to say so have fun with this tank thingy.