The public event kill target especially on Earth is defective.
So many times they are near impossible to kill and they get to the end point way to fast.
Either fix it or you'll see even more ignore it. All it seems to do is use u all your ammo for nothing.
-
If nobody is there to help then yes ignoring is the best course of action. Shield hit points, regen, and delay is unforgiving to any solo guardian no matter what planet your on.