The visuals are really cool, and as for their enemy, it wasn't solely Aragami—tho it was kinda subtly hinted in earlier eps. Their concept at first was confusing especially if like me, you're not familiar with the game, but anyways, they managed to gradually shed some light on my confusion as the eps progressed.
Its premise is not really new, but I guess the execution made it interesting. Also, its visuals are definitely a match for fantasy though I'm not sure if it's adventure-like (maybe their character designs?) because it felt more military-like for me.
Anyway, thanks for stopping by and looking forward to seeing you around!