Shane's tactic was somewhat suicidal but it was the best he could think of without being forced to communicate with each other immediately after they established their team, while he would also be able to figure out the two girls' combat prowess which was important in order to refine his plan.
Fighting against the elite stage centipedes was less of a problem, but the real problem would be the awakened stage beasts because their combat prowess varied from being extremely weak to turning into an indestructible beast in the basic primordial dimensions.
Mankind was well aware of the fact that they couldn't defeat some beasts at the awakened stage as they just couldn't defeat a beast whose defenses were too strong to break through, even after investing several tens of thousand gold coins in all kinds of attack measures.
