Mednafen on Windows with TG16-Mini USB Controller. Playing as the Axis (green). The strat here is to lure them into range of your Hadrian and factory. They will triple team and destroy one of your tanks at the outset, but you can dominate them after that with Hadrian, support, and surround, while healing any troops with your factory.

Time saves might be possible through better RNG and/or if there's a way to beat them all in 5 turns instead of 6.