You got knocked back, I never even said it would hurt that much since your shields and armor absorbed most of the impact. Basically the gist of the device, it uses anti-matter and matter fusion to discharge the arrow, the arrow has tiny reactors throughout it to safely circle the energy and not explode in the device, the fusion energy is conducted To the arrow and throughout it then it discharges at 99.9% Lightspeed. Then it takes a while for the device to recuperate.