The best thing about playing as samurai Mitsurugi is that if you've mastered his moveset in the previous Soulcalibur games, then he won't feel any different in the new installment either.
Mitsurugi is a pure offensive character that is best when it comes to low attacks. As soon as your opponents start crouching in defense, you can use his new excruciating attack that triggers on ducking opponents.
Otherwise, try to push your opponents into a corner and bash them with your sword. The strategy is simple here and the blows are hard!