As Bob said, the terrain is too flat, it uses 1 tile, no doodads, no nothing.
The camera should be moving more often and you should make it a bit faster.
The battle should have some spells in it and not just normal attack like a melee map.
My suggestion is you add a short story before the battle, put the battle in some kind of a valley, add doodads, tile variation, a nice fog, some custom sounds possibly, some fast passed battle music and work on some spells and systems.