If you dont like spoiler plz dont read
Spam one type of structure one at a time.
The order goes wood->some mine that helps you move them -> 2 max wood camp ->2 max goldmines and then 2 max ranches -> and then do the same to the barracks and houses
lv1 barrack is weak militia
lv2 barrack is rock throwing militia
lv3 barrack is footmen
lv4 barrack is mages which do AOE
lv5 barrack is iron golem, strongest frontline tank.
In the end you need a lot of Mages and Iron Golems. So you can stay in lv4 for a period before building them into lv5.
After massing about 52 pop of Mages and golems I've beaten the game idle game style.||
Suggestion to dev:
1.Limited Conversion
Compare to delete, a restricted action that transfer different structure into each other is a much more elegant way to optimise the production line, a tradeoff of space and short term production block.
2.Better tooltip at barrack, or making different barracks.
I wish I can assign my barrack to produce either ranged combatants or close combatants.
3. More enemies.
Like flying enemies and cavalries that cut the ranged combat dubes?