An interesting new battle system makes this a fresh, fun strategy rpg.
You will need to build walls in response to a soon to come attack. and plot attacks where the door has been left open by your opponent. The game lasts pretty long, over 30 hours. So length is always a good thing.
It is actually very challenging though. You will need to go through lots of battles, grind a lot to level everything up. You need to get close to maxing out your hero and units to get past the bosses, etc. So some may get annoyed by kind of being forced into grinding to win. But most will love the new battle system so much that they won't care at all!