It's kind of spiritual sequel to Dungeons & Dragons Shadow Over Mystara Capcom released in arcades in 1996, it found clear set of elements and the general feeling; and due, George Kamitani is to achieve the two titles.
So this is a Beat'em all with a pronounced RPG dimension.
Each of the 6 character offers a different gameplay (except the Wizard and the Sorceress who are close enough) the skills to unlock as and as we gain experience and loot provide good motivation to redo levels in hard mode and inferno.
After the game and reached Lv 99, you can tackle the Labyrinth of Chaos, a special level to dizzy depth and well identified challenge.
While the co-op to 4 is even better, although requiring an adjustment period, it is difficult to navigate at first.
Again, Vanillaware prove that 2D is not outdated, to my taste their best game to date.
I'm on the Japanese version since mid-August, 120 hours of gameplay and not a moment of boredom.