i didn't like the idea that you got to destroy the three temples in order to win the game. there was some playability. the frozen giants are really a challenge when you are on a early age. but it gets really easy as soon as you advance to the classical age. the enemy doesn't keep attacking your and trying to stop you from destroying the temples. there were a few times where a couple of frozen giants tried to destroy my towncenter. you should make the enemy to constantly attack player 1 so its not so boring.
Enemy was kind of easy to defeat. you can just advance to the heroic age, make all the improvements, make a huge army and destroy the three temples. you can take all the time you want to win this game. you should have put more enemies. It took me about 24 minutes to beat the game by doing all of the improvements and building all the towncenter.
some good ideas were putted into the scenario. like the story and the enemies town. not much of interactive enviroment. the enemies units are just there waiting for player 1 to show up and try to kill his units. you should have put some villagers and units to work on resources to make it look more active. it was just boring to see the enemies comp just standing there, waiting to kill player one.
Map Design: 3
there were some cool ideas. like the rocky road or the market stall. but it needed to be painted with more than just one color. units were able to walk on the lava. i don't know if you wanted that to happened. but it didnt looked right in my opinion. the volcano was sort of good looking. but the shape wasn't really of a volcano.
the story was kind of cool. but i think you went off topic with the thing of destroying the three temples. more details on the story would have been better. Use the spotlight to inform the player about the story. thats what the spotlights are meant for.
Additional Comments: make it more of a challenge by making the enemy constainly attack player 1. also, put some villagers on the enemies side and put them to work on more around the scenario to make the scenario more active. try to put more details on the story by using the spotlight.
you can also win this game by building all the settlements or destroying all of the buildings. you can fix winning conditions on scenario data where there is a box marked with an X. check the box so the scenario doesn't apply winning conditions like winning by building all the towncenters, or destroying all of the buildings. when you check this box, it will only make the player loose or victorious according to the triggers you applyed into the scenario