I was wondering whether it would sound superfluous if I add the adverb "again" to the end of the sentence:
Steve Rogers: Well, what are we gonna do now?
Tony Stark: You know what, give me a break, Steve. I just got hit in the head with a Hulk.
Scott Lang: You said that we had one shot. This! This was our shot. We shot it, it's shot! Six stones or nothing! Six stones or nothing.
Tony Stark: You're repeating yourself 'again'. [Source]