Good
it is somewhat good, but once you have the correct strategy, everything becomes too easy. i question the use of turrets. they practically make it impossible to reach the base until you use god's wrath. however, i like how you made weaknesses for each enemy, and upgrades.
going back to being easy, yes, the opponent DOES go in front of you in technology, but you can quickly catch up, and in hard mode, i already went up above the enemy, who was in the medeval age, and i killed the opponent simply by spamming cannons (due to the fact that the opponent's turrets were outdated). this becomes way too easy for most of us(except those who complain that the enemy can use specials)
overall, i guess this is pretty much okay, and a splendid improvement over the first series. keep it up.