If you feel the game is too easy try wining son of zeus in minimum time (5 years). This means you have to take a province every turn and cannot loose a battle. After some struggle I manage to do it about half of the times I try. The strongest start I found is upgrading armor and trade routes first turn and buy swords the second. From that point on you try to only buy as few units as possible to secure the win and making the important upgrades (giving priorities to weapon and armor upgrades) and only transitioning to stronger units when you can by having easier fights next round (since buying stronger units is expensive and will reduce your army size). The reason armor and weapon upgrades are better than gold is because you are loosing less money by having stronger units and wining the fight faster than you gain by getting gold upgrades (that being said you should still make few gold upgrades when possible). Hope this tips help :)
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