@Zac Elective Breaching is to do with how the weapon interacts with walls, buildings etc, in the new rules but you don’t need knowledge of that rule to use the weapon in a normal game – just use the rules in the core book for using weapons to destroy buildings. The supplement has an advanced system for how weapons and walls interact when fighting aboard spaceships and large structures. This is a new way of playing and one of the key things The Dronescourge Returns is about.
Any rules that you need to play will always be contained in the FAQ documents, which are free.
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