Roger had armor-breaking skills, but they all had various restrictions-
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Red moon's [ pupil cutter ] required the blade to cut the target. Roger would be a fool to use red Moon to cut an iron lump.
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The Phantom axe had a 90% chance of breaking armor, but it could only be used on a single target.
Moreover, it required a sneak attack.
The sentries in the mine wouldn't give Roger so many chances to pick up scraps.
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The last step was slide kick.
This martial Art's strong point was the knock-down effect, but the armor-breaking probability was average.
It was also limited to a single target like the Phantom axe.
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Even the strongest weapons Roger had at the moment, the Taiyi fire blade and the Emerald trade wind, were unable to break through the armor.
This made him fall into deep thought.
the interior of a construct is relatively fragile. As long as the sword can go in, it will work ...