You know actually outside of bosses in Black or Sigma, you really only had to spam 1 or 2 attacks to kill anything in the game and do as good a score as possible...
1) any attack move you like and can kill an enemy relatively fast ( Izuna drop ?)
2) On Land UT spam till encounter is over and every enemy is dead. Preferably keepign some orbs up to carry them over to the next fight to start with an on land UT too...