Mednafen on Windows with TG16-Mini USB Controller. The strat here was to deny the enemy the northeast factory. Set up an Atlas to destroy their Pelican's Kilroy (The Atlas one-shots the Kilroy about half the time.), buying your Charlie time to come over and take that factory. Put up a strong, artillery-supported defense near the middle factory, and go take the southeast factory, but that really doesn't matter. Once you have the northeast factory, load up your Pelicans with Giant and Kilroys. The enemy will smell trouble and send a unit back to protect their base, but too late. Deploy your Giant and Kilroys around that unit to destroy it and take the base.

I think this strat is pretty sound, and I haven't found a way to beat this map in fewer than 9 turns. Possibly there is a way to feint with the Pelican as you go for the northeast factory, and then sneak down directly to the base. Other time saves could be gained by reducing/eliminating inconsequential moves/attacks.