Great story, but the mc is lacking a little in the brain department. He always rushes the floor guardians. Very few of his minions survive. He should have spent days making minions way stronger than him to help clear the way. Merge them so much that they all become S rank.
Adam_K47xx
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LIKEGreedyWrath:Not sure if you have read up to the latest chapters but that strategy you suggest goes against his very ideals, plus it would be infeasible.