This game could be good or bad depending on whether you played the original or not.
First the music is very good. I don't remember if they left out any tune or not, but they kept the more important ones from Lufia 2, which is was this game was a remake of.
Now if you played Lufia 2, this game will feel kind of bad, cause you are not getting the full story, sure you do get all the important plot points from that game, but everything else that made the game unique was throw out the window.
Now the gameplay, there are enough puzzles to keep you interested, but nothing hard like Lufia 2. The battle system is no longer turn base, but action. This in itself isn't too bad, if you only have 1 character, but you have 6! I don't know but i think if they are going to give you multiple characters they should had adapted the system similar to Secret of Mana, where you control 1 characters and have other characters on field to assist you. Even if their AI could be annoying, I think it is better than having them on reserve. My advise you should just use Maxim, the main guy, cause you really need to use him for the final battle, as he have the ultimate weapon.
Also this remake introduce a grid system called mystic stone. You can collect these stones to customise your characters. This is probably the only nice touch I think was cool for this remake.
If you need a RPG for your DS you should pick it up. It will keep your interest for awhile. Unfortunately it does not quite have the magic Lufia 2 had. Also if you don't like long game this is for you. The main story is not that long, but if you would like to do optional contains then that is another story.