How do I perform a guard impact?
Solution 1:
Guard impacts are performed with the combination ◁A+B+K (4A+B+K) and takes half of a soul gauge meter, regardless of whether or not they hit.
Additionally, certain characters have combinations that perform a guard impact. For example, Siegfried's B+K stance transition includes a guard impact. You'll be able to recognize these by their green glow as the animation occurs.