His opening Video is good. I don't know if "I am here to fight Trump" is the best approach, but it seems to be what he wants to go with. He is definitely playing on the "we go back to what things were like when Obama and I were in charge" nostalgia.
Like I said elsewhere, if that's all he's got, he is going to flame out quickly. There are too many people putting real policy up for him to cruise on that for a whole year. I don't think he has another gear, but he may surprise me.