This game is totally brilliant. After 3 attempts on defeating a terrifying enemy - a Giant, Red... Turnip?, I finally found the right tactics.
The game might come off as a bit repetitive as some though. You have large missions, which are pretty much unique each time. Then you have some smaller side-missions.
There, you might end up fighting the same enemy a good 6 or 7 times (in different quests, not after each other). Of course, you meet them under different circumstances, so it pretty much gets tougher each time. Personally, I'm doing all the side-quests (that's not really a fitting term though. More like mini-missions), so this game should end up being a good 30-40 hours for me. If you find those repetitive though, and just do the core game, it might just take you a 20 hours to finish (note: I have only played 15 hours so far, and think I'm between 1/3 and 1/2 through. It could be longer though).
The brilliant thing about this game is, that whenever you come to a main-boss (as in, a main miniboss, not one of the main main bosses) you think "What the hell? How on earth can I defeat that?". Then after some time, you realize what you have to do. I'm not really sure what genre I would put it in. It's a strategy game, but it doesn't really play like a RTS. More of a "Strategy Exploration" game.
Edit: Gah, VGChartz 2.0 does this to a fair bit of my posts. I can't fix it right now (I think), so I'll have to edit it when it stops being retarded.
Edit 2: Tried making some random spaces, hope it worked.
When I write Fact: in one part of the post, and opinion: (or a similar word), it's not because I can then say "my opinion can't be wrong". It is to inform what part is pure facts, and which part I try to draw a conclusion in.
