Eh.
Well, here's my gameplay experience. I read through the tips, set up a few towers, beat the first 10 or so rounds with slightly less effort then that required to breathe, before getting completely overwhelmed by the first boss, who managed to slip completely through my "Avenue of Abismal Firepower", almost completely resistant to every kind of weapon. It was at this stage where I realised that this is just a cut and paste, dyed in the wool Elemental Tower Defense game, with pretty much the same features as every other TD game before it. You get 2 stars for the art, which is pretty much the only original part of this game.