No also in the late game he doesn't upgrade. But he is rotating from time to time his soldiers. So it's possible to meet gold soldiers from time to time in small Baracks. If
you attack him to slowly at the front he will built a lot of castles and towers. Then it will be really hard sometimes to rush trough this. But if you have build enough
soldiers (that it doesn't matter if you lose many of them) you just need to counter attack when he attack one of your castles. then his buildings have only one soldier. In
this way you can attack quickly. But once you passed his front line it will be an easy thing. When you have enough gold he can't defend himself well anymore. But if he
built up a giant empire it will cost you a lot of time to conquer all of him and if you are slowly he will build often new mines to build fresh soldiers.
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