The story is meh. Not really bad, I don't think, but definitely not great. Just kind of there.

The metagame progression; gear collection, summon collection, achievements, etcetera, is all kind of cool, actually. Definitely my favorite part of the game.

The gameplay starts off decent enough, but the limited control scheme really hampers any ability to micro units, and the game winds up making some incredibly frustrating design decisions in order to make the game hard, and as a result the endgame (last 1/4 or so of the story and all of the special bonus boss stuff) are all frustration, zero fun.