Although Sigma was only thirty meters away, he didn't notice Sigma's presence while he was moving. Maybe his senses weren't that good when it came to detecting his targets, but his instincts could tell him when someone was trying to affect him in some way.
"What the hell are you doing?" Rosrk shouted, "Didn't you come here to fight me? How do you plan to take my head while acting like a rat?"
Sigma was thankful that the enemy was stupid and blind by his own power. If that weren't the case, he wouldn't have come alone, and he would have brought some of his soldiers to help him surround the area. He also wouldn't try to fight Sigma at night when his tracking skills sucked…
Eventually, Sigma reached a bush and then bid behind it to calm down and wait for his arm to heal a bit more. He still had a secret weapon against him, but he couldn't use it until he had a clear method of how to kill him.