he learns the truth about hero
To do anything Leonato asks.
I think that leonato's instruction to hero is to say yes to claudio if he asks to marry her and this shows that the traditional attitudes were to get married at a young age and to get money.
Leonato's brother Antonio says in the first scene that Don Pedro and Claudio were in the war. Beatrice asks after Benedick, who was in the war with them.
When Hero is publicly traduced by Don Pedro and Claudio, her friends and relatives react differently. Beatrice helps conspire to fake Hero's death, so she will not have to live with the shame. She also encourages Benedick to "Kill Claudio" and he accordingly challenges him to a duel. Leonato challenges Don Pedro. Once Claudio and Don Pedro are faced with the evidence that they have wrongfully accused Hero, Leonato forgives him but charges him with a penance. He also asks Claudio to marry his "niece" but, with the connivance of Beatrice and the other women, it is Hero who shows up at the altar.
Claudio had publicly humiliated his fiancée Hero by accusing her at their wedding of sleeping around and then walking out. Hero's cousin is Beatrice, who is Benedick's beloved. When Benedick says he will do whatever Beatrice asks of him, Beatrice answers crisply "Kill Claudio" because as far as she is concerned he is a liar, a slanderer and a creep of the first water. Somewhat reluctantly (Claudio is after all his close friend) Benedick agrees.
He asks them to watch below Hero's window on the night before the wedding.
Whatever he asks of you.
She asks him to kill Claudio for causing so much pain to the her family
He can expect whatever he wants. You DO NOT have to do or give him anything.
Whatever comes to you first!
Claudio is deeply suspicious of others, for no good reason. When Don Pedro asks Leonato for her hand for Claudio, Claudio immediately believes Don John's suggestion that Don Pedro is after Hero himself, and that Hero would instantly change her affection to Don Pedro. He is also instantly ready to believe that she spent the night before her wedding in bed with another man when Don John proposes this (although with some fairly persuasive trumped-up evidence). Nevertheless, if he knew Hero he would be skeptical of the suggestion that she was unfaithful and not so willing to believe the worst of her. One cannot help thinking that he will make Hero a poor husband. As for Don Pedro, he does not have any particular reason to assess Hero's character one way or the other, but he does know the character of his brother and should have been skeptical of anything Don John said, since he was a proven liar and troublemaker.
There are a number of conflicts in Much Ado. There is a conflict between Beatrice and Benedick, and also a conflict within each of them. They want to love each other, but their pride and old habits keep them from saying so. There is a simmering conflict between the sullen Don John and his brother Don Pedro, which Don John resolves by being a general troublemaker, by stirring up trouble between Don Pedro and Claudio and later between Claudio (with the support of Don Pedro) and Hero. Claudio's cruel treatment of Hero causes a whole new conflict to arise, in which Leonato, his brother, and Benedick (turning on his old friends for Beatrice's sake) threaten the lives of Claudio and Don Pedro. A small but amusing conflict is that between Dogberry and Borachio, in the course of which Dogberry, offended at being called an ass by Borachio, repeats the slander by telling everyone to remember that he is an ass. And he is. Beatrice asks Benedick to kill his friend.