Forum:Goyo guardian vs d.d. assailant

According to what I know. If goyo guardian destroys d.d. assailant by battle, d.d. assailant effect will activate at chain link 1 since is a obligatory effect, and goyo's wll be chain link 2 since is optional. And since effect resolves backwards. Goyo effect will special summon d.d. warrior and then... I don't know. What will happen to d.d. warrior effect?