Really beautiful game. Each enemy type looks unique and distinctive, and the little cutscene at the beginning really looks just like the cutscene from a (good) Gameboy game. Sound effects are good, too.
The combat system seems to work flawlessly, but, as others have noted, it doesn't seem to have much depth--there is no need to switch up strategies, pressing "Attack" will defeat all enemies.
Additionally, I'm not crazy about Final Fantasy-style random encounters--I prefer to see the enemies coming, so I can at least make an effort to avoid them.