I guess this is a game with many strategic options which lead to a good replay value. If I only could really play it - the onboarding leaves something to be desired. Please TELL the player that he can use TAB and the scroll wheel and so on... the TAB/mouseover, after I found it out, did help a little, but not enough. The explanation is too short here. Maybe it may suffice for players which are accustomed to this sort of games, but not everyone is.
For example, you say making graves is important. Yeah, they are needed to spawn my army. So how do I dig them? Is any place ok or is it impossible on the path? I was digging which the shovel but it produced gold, not a grave.
You give some tactical advice on the game page (goals and methods) but this is no substitute for telling HOW to play it in the first place.
Aside from that, I see the complexity in all corners. This looks like a game made in a month, not in a good week.