I added in code to handle weapons with the High Crit property. They key off the properties of the weapon. The code also supports brutal weapons:
Roll 1 is done with a High Crit weapon
Roll 2 is done with a standard weapon
Roll 3 is a High Crit, Brutal 2 weapon (Execution Axe)
Roll 4 is off the combat tab...I'm still working on making that support High Crit and Brutal.
The mini-sheet and power sheet fully support both brutal and High Crit criticals.