HARD (insane is coming just wait)
1st evolution
start off by making a egg rifle then just send out 5 Slingers its really weird but guess what the opponent uses its special. It's really annoying at first because you have little money and your exactly at the base and the enemy can hit it but this is good because you have a turret if you have any money just spend them all on club men. club men are the best because you have to unlock any heavy thing to get any bonus damage on them but it i slightly annoying when the speedy Dinos come out but if you just keep making club men you'll be ok. Sadly the price is that the opponent evolves before you.
2nd evolution
this is pretty easy just start off making infantry until he makes heavy (if he doesnt then just keep making infantry and go to the next paragraph) then he will evolve(this will be before you).and you have to make as many anti armor as you can and then use them and sometimes support to beat the armoured guys (massive gold when you beat them) and then as soon as you evolve....
3rd evolution
...start making as many priests as you can priests are probably the best support just keep making them an upgrade income level twice if you have enough (this guves you like heaps from horses) i suggest turning to x2 speed because there is no skill involved in this evolution and if you did it right you will evolve before him but your base will base will be really weak
4th evolution
you should have a MASSIVE amount of money if you did well enough in the 3rd evolution if not then it just gets harder from here in but if you do have money spend it all on damage of anti armor,the armor of anti armor and put your income level up to 3 this evolution you can just make support since they nearly beat infantry and just chip in anything you want its not that hard if you did well enough in the 3rd evolution
5th evolution
this is easy just wait till enough money and buy the upgrade that lets you have the cannon and just make HEAPS of cannons at this point if the enemy is bad then you can get enough money to upgrade the rest of the anti armor damage and armor. If you did everything perfectly and you think you have a chance use the special and let your cannons go forward and win if you dont think you cant then just evolve.
6th evolution
wait till you have enough exp for the special and then just send out 10 grenade guys and use the special and keep making more grenade guys
every time 1 dies
Note: it's bad to evolve to 6th evolution because the opponent gets better turrets
Note:if you do bad in the 3rd evolution its hard to catch up and you may have to go to 6th evolution
Note: if you get to 7th evolution then you did really bad in most of the levels
hope this helped :D tell me if something is wrong with it