I have played all night in order to get a feeling for this game, but compared to company of hero's, this game lacks some serious strategy.
Too much RPG, and all the units seem to deal some sort of damage, we don't how much, many questions due to the lack of unit info.
All I found myself doing is attack attack attack, while never working on flanking or specific tactic, and I won all my games.
Another point, you can tech extremely fast, killing the usefulness of any Tier. Use weak Tier 1 units to just keep capping with your hero, then tech and take over the map.