Best melee combat in any game ever.
First off, play the Trial Version if you haven't already. You should need no more convincing than that, but just in case you are worrying about longevity: there is an expansion pack coming out this holiday season and plus there are tonnes of user friendly mods out there like the "Battle sizer" mod that lets you set the limit to the number of players you would like on screen (Warning: it depends on how much RAM you got, want more enemies and friendly AI, need more RAM!)
You will not find better melee combat anywhere, that's a guarantee! The RPG and team building elements suffice and it's a great and addicting that pays for itself for many weekends to come.
What are you waiting for? A price drop? This is £9 for a game you will absolutely love playing and, probably, gladly pay for twice for. Get this game!