Hard.
Just used the same techniques from a lifetime of gaming and strategy games, and its just the same, but different.
Im not basing the game, I do like it I had just hoped for, maybe more DEPTH in the actual combat side of things. More strategy and less zerginess maybe. It feels like they took the fast-but-hero based gameplay of warcraft 3 and just reskinned it with smoother graphics and lower level but more heros. (mercs)