I think the times I wrecked XB and K in a block can be counted on 2 hands still :/
I guess I could try my HLT block with the Major again and "hope" I botch that to kill off XB, but that's a bit too many killed off then, but seeing how we got new Generals and a skill tree, I think I won't be needing the Major to do any more blocks there, tbh it was a bit weird at first using him to block instead to attack, but well worth the experience of having done it