As Cavill's Solo notes of Hammer's Kuryakin, the KGB agent isn't one for subtlety. From the looks of this trailer it's Solo who does most of the spy work, whilst Hammer goes for the brute force approach. There is, after all, a point in this trailer where he beats up a foe by chucking a motorcycle body at him. There's also some light comedy in another brief scene where he knocks out a card using his Russian death pinch, and advises Cavill not to touch him for twenty minutes. So again, the action looks legit, but there's still time for laughs.