im a fan of nightmare and mitsurugi, nightmare is slow compred to most people, but in the hands of a someone nifty with parrying and dodging hes INVINCIBLE, he has alot of long range moves, most opponents wont get within striking distance of you, and when they do slip through the fight is over in seconds
my tactic with mitsurugi is prettymuch nonstop attacking, combos left and right, didging, blocking, countering, (and like nightmare he has the power advantage over most characters) but he is alot faster and more agile than nightmare,
depending on who im fighting i may use different people, i use nightmare for all the characters except for the speed demons, (taki, rapheal, and maxi mostly) in which case i use mitsurugi to keep up with them,
however, i ALWAYS have problems with people who are seung mina players, i suck as her, so i dont have a strategy against people playing as her, something about her, i cant predict what shes gonna do like i can with everyone else