I have had some problems with guard break. I would start the action then the other player would start a strike. I would not be able to block. I would see my shield touch their body but it would make me stumble and their attack would fallow through unable to block. The least Ubisoft could do is allow me to block the attack or give a reason for this. I love the game but this problem is infuriating. One example is doing a guard break and then a Peace Keeper would start a long string of attacks wile I am unable to defend. It is a little odd seeing a stumble right in front of a Lawbringer's polearm. This may be just the Conqueror but I would love to hear some news on this topic.