Nier is awesome. It's an action RPG, not an action/adventure game like GoW. It blends lots of different playstyles together though. For example, there's 2D side scrolling sections, a section that plays like a graphic novel, bosses have bullet patterns like you'd see in a bullet hell shooter, and more.
Its graphics are straight out of 2005, but the gameplay, dungeons, story, characters, and especially the OST are all really good. Definitely one of my top 5 RPGs this gen.