How different can be aliens?

Everyone says that if aliens exist(I have no doubt that they don’t exist),they are totally different from us.But in reality(assuming that they are the same level with us) if they are an intelligent civilization shouldn’t they look a bit like us.They must have hands with an opposite finger to grab things,senses organs(eyes,nose,years,skin,etc),a way to communicate(tongue,vocal cords or something similar),a way to move[most likely legs(probably they are bipeds)],a social scale,social network,a leader,ways to entertain themselves,etc.