Well, I was played up there, and creeps are to near of my base, they attacked me when I start to make second building. You should move them little further.
Also, you do not have passive icon for Obsidian Overlord icon, it is green here until I am training hero.
Yes I play as Undead.
Also, map has no enough room for building.
I like how you made terrain, chose units and creeps. Good work man! I would rate it 5/5 because you put hard work!
In Tavern that Snow Queen requires Tree of Life instead of any third command center upgrade. Also she doesnot have passive icon.
Also, Archimonde is unbalanced! With him only I beat computer leaving over 20 infernals, doom guards and fel beasts! Plus he has divine armor making himself immune to all attacks except chaos damage.