Katana Invulnerability help

[DRoddo]

Hi guys, it's my first time ever delving into this type of Brute (and also my first time ever playing a Brute). Is there a good build out there that I can follow for this combo? 

[Snarky]

You want to look at Hyperstrike info. In my opinion the definitive word on Invulnerability and has provided templates