I was able to get this during Mission 4 en route to the tower. After defeating Willhunter the first time, you will fly to a new area. On the second plateau you will have to fight a lot of bad girls.
Use simple combos like X X X and X X X X, along with Mace Storm, and this should be a walk in the park. Even on Emerald Knight difficulty this is easy, just remember to evade as if you get hit, the counter resets.
If you leave negative feedback, please comment why as so I can adjust this. Thanks.