Thanks for the chapter!
Looks like the Hero and other titles aren't just for show. Just guessing but likely used a fighting technique and/or magic to have the damage only affect the organs and bypass the skin causing severe damage without splattering the body or sending the big guy flying with the Saintess. Likely did so to take big guy out in one hit without traumatizing or injuring the Saintess by hurting her or raining all over her with blood and entrails. Poor MC. Wants a carefree life and yet not only got extreme titles but a destined meeting with a Saintess who doesn't want to leave his side. In any case how did a country's Saintess get captured and enslaved? Usually would expect her to have at least a few elite guards to protect her even if doing so while concealing themselves. That and once she disappears would mobilize multiple search parties. Except for the leader the others seemed to be small fries. Then again one of them mentioned it was suppose to be an easy gig so could be someone powerful with excessive lust or greed got all the information together, maybe even arranged a few things to prevent interference and hired those guys to kidnap her so if something unexpected caused the plan to fail or to make it easy to kill them off once have her so there'd be no connection between her being kidnapped and the mastermind.
BTW, why hasn't MC removed Slave Contract on the Saintess? Since plan was to sell her it'd be a temporary Slave Seal although I'm surprised with her ability it was able to be applied to her without her holy powers blocking it. It really a terrible thing when Slave Traders can put a Slave Seal on anybody they want without any kind of restriction. Prompts greed and lust while encouraging the idea that all people aren't people but merchandise can capture and sell whenever the opportunity presents itself. Not surprising Slave Merchants have such a bad rep.
BTW Which chapter did MC meet the Saintess? He mentioned her being the nun from that time but which time was that?