Nice video...first time i see actual gameplay!
Although, i don't know if i like this controll scheme...touch devices are not the same thing as using a mouse! This touch-to-move stop beeing fun when your hand is covering half the screen...hope they add some tradicional virtual stick control as an option!
Also, something that i think is essencial for dungeon crawlers is randonized dungeons. It's like Dungeon Hunters...once you've finished the game, there isnt any reason to go back! Not unlike Diablo...