The force exerted from the attack you delivered to Crusher was what gave him the capability to grab your fist while you punched him earlier," Luxy explained. "And as for how the iron golem was able to hurt you, it was from the power reflected from the kick you delivered to it."
Ryder nodded in realization as he stared at the two, waiting for them to make the first move. "Now I understand."
"Yeah," said Luxy. "You have to attack with enough strength towards Crusher that would knock him off the platform with guarantee."
"That wouldn't be easy, given that his annoying familiar is on the same platform as us," said Ryder.
"Or..." Luxy hesitated for a bit.
"Or what?" Ryder inquired, maintaining his outward composure while internally engaging with his familiar in a deep conversation.
"Or you summon me out to take care of the iron golem."
To be honest, Ryder never expected to be getting so much stress from a red mark summoner.