The “Island for One” scenario.

On 1.60, it can be completed in a similar way, without much stress (this is for those who haven't played the earlier versions). I eliminated the opponent by initially developing from a single Necropolis, and then taking their Inferno on the northern island, and later the other two to the west. But my game led to victory after clearing the second squad of mage troops, although they still had troops remaining. For some reason, it worked out that way; I chose Recruit level to avoid stressing myself out and to enjoy the game instead.