The dagger-wielding invader made the same move that his suicidal comrade had made a few seconds prior and had inevitably gotten him killed... But he was different from his suicidal teammate.
He wasn't as weak and had a higher chance of survivability... Plus he didn't have much of a choice at the moment.
He wasn't going to remain a sitting duck when there was a chance to fight for his life.
His mission was to come here and steal something, not to come and leave his life behind for the grim reaper that he acknowledged Davies Lake to be.
Completing his mission was now an impossibility, but he wished to avoid the worst-case scenario where he would die along with his teammates, and for that, he was going to fight...