Three big systems landed this stretch: a repeatable framework for building NPCs fast (Deighton called it our Monster Manual), a damage-type system where blade attacks and even called shots actually change what armor can stop, and armor mechanics built around Protection, Resilience, and a real Integrity pool that degrades over a fight.
Also: losing a limb in Shadows is a real, tracked thing, not just a debuff. Full breakdown on Patreon.