When fighting, Duanmu Huai always believed in being swift, accurate, and ruthless. Due to his size, Duanmu Huai couldn't really resort to sneaking attacks during battle. Therefore, his best strategy was always to charge directly at them, intimidate his opponents, and disrupt their gathering while they still hadn't fully react.
As for other things...he'd figure it out after the disruption!!
As it turned out, Duanmu Huai's strategy worked magnificently. The individuals busy with the ritual completely didn't see coming the heavy stone door being violently smashed open, giving them quite the fright. Before they could snap out of it, Duanmu Huai, with the assistance of his jetpack, catapulted into the air, crashed into the ritual area like a massive stone flung from a trebuchet. Then he gripped his war hammer tightly and swung it hard, sending several ritual participants flying against the wall, where they fell silent after their cries of agony.