Luminous Arc 2 is a game of positioning. Never rush forward with just one unit; always move as a phalanx (box formation) so enemies cannot flank you.
Unlike standard MP-based spells, Flash Drives use Drive Points (DP). You can "overcharge" these attacks by spending extra DP to deal even more damage, making them vital for boss fights. luminous arc 2 walkthrough
Investigate the ghost attacks. This is the first major branching point . Luminous Arc 2 is a game of positioning