Following his prior thought process, he only considered that this troll had a chance of exhibiting explosive (Critical) strike. Hence he only specially activated the 'resist' ability of his hatchet. He hadn't expected the strength disparity to be so great, to even exhibit the special crushing effect! This ferocious bonus damage was extremely terrifying, and it seemed like every attack carries it. Furthermore, it was not considered an attack, and defence had no powers against it! If not for his individual innate ability, that attack may have taken his life!