I got this for Xmas and was initially excited and put a couple of hours in to over Xmas but haven't touched it since - Maybe I put too much faith in the Dragon Quest skin to get me through the game, but I've barely scratched the surface and I've already had to drop it because of how miserable it.
This is entirely my own problem, I understand a good many people love this genre or sub-genre of games, but to me it's mindless button-mashing - The combat isn't even particularly fun, the character movement is incredibly slow and tedious. The tower defense thing is insufferable to me - I get a message that something is taking damage and it's on the other entire side of the map, it takes an eternity to walk over there, all the time my team mates are just blindly following my character when they should be fighting enemies.
I feel like it would be far more fun and strategic to be able to issue commands to party members rather than relying on monster coin summons since once they die (and there's so much going on screen I don't notice when they do so), you still have to drudge all the way back to the place they were defending to summon more.
It looks great, it gets me excited for a real Dragon Quest game, but the gameplay is just not my cup of tea at all. I feel bad because it was a gift, I feel bad because it's Dragon Quest, I feel bad because I'm barely a couple of hours in to the game (the last characters I got were Kiryl and Alena) but it's just so much the exact opposite of what I want to be spending my gaming time doing, I can't tolerate it any longer.
tl;dr - it's not the game for me.