I have been playing this game, where I had beaten 1/4 enemies in the game. But after that an orange enemy is very difficult to defeat and the other 2 are very strong, so when I concentrate on 1 the others build quickly. What/s the best strategy to defeat all the enemies in the game?
There is no such thing as "Golden Horde" by Serjik Waters for AOEII.
Perhaps you mean AOEIII.
In that case there is a youtube video which shows how to beat them.