I'm... almost disappointed? I guess is the word, maybe frustrated?
Why the fuck does killing something that IS GOING TO HARM/KILL HUMANS... Y'KNOW, SOMETHING THAT EVEN THINKING OF HURTING THEM WOULD RESULT IN LOST POINTS, mean that he loses exp? Feels like it's just something the author decided to put in to prevent him from getting anywhere... and the faxt that commanding his subordinates to do it DOESNT count but direct stuff does is weird too, since we know commanding people to do stuff counts as his own actions...
Just doesn't really make sense to me...
Maybe if he was going out of his way to hunt monsters NOT threatening human life I could understand, but the Hobgoblin was DIRECTLY threatening the town...

As the others have said, it's too controlling. It's basically making him to be some cyborg that can only think good. But we know not everything good will show good. But I guess it's needed so MC won't get corrupted easily. It might be that the slightest notion of evil is a trigger.