15 days later,
Right now you can see a person who was fighting those Kangaroo monsters in the barren land. As you can see that it was some was fighting those Monsters. Also he wasn't using his concealment technique to fight those Monsters. You can say that Sam considered this monster as his fighting partner and because of this he did not use concealment techniques while fighting these Monsters.
You can say that he already knows the attacking pattern of those monsters and because of this he could easily dodge the attack of those Monsters.
Suddenly one Kangaroo came behind him and just about to attack him with his tail. But Sam already senses that and jumps away from that place.
But he quickly turned around and swung his sword toward that Kangaroo. Even without using the spiritual energy to coat his sword he is easily able to kill that Kangaroo.