2 minute review: It's a difficult, dark, intense, action/adventure RPG. It's got a bunch of different weapons (like 15 weapon types), a few kinds of magic. Dodging, blocking, or parrying are important for staying alive. Level design is pretty good. The story is okay, but it's mostly mysterious lore hints here and there; you could ignore the story entirely if you're not keen on it. The bosses are big, epic fights, and the "trash mobs" are nothing to sneeze at either. The PvP in the game is pretty competitive, but not really my favorite.
Like anyone will tell you, the game is challenging, and frustrating at times. IMO though, it's not beat-your-head-into-the-wall hard, so don't be too intimidated (a little fear is healthy though).