When they're taken care of, run down the path that the truck was previously blocking (it's gone now) and inspect the nearby shed for items and a save point. You'll land right in the middle of the three ganados-quickly run away to put some distance between you and the enemies before attempting to take them out (or use the knife strategy above). After he’s dead, three more ganados will appear outside the house-before confronting them, head up the stairs in the back of the building, grab the ammo from the table, and then jump through the window nearby.
A good thing to do in PRO mode is to wait the not zombie attack you, back a little to avoid the attack, cut his face with the knife, kick him and keep using the knife while it's down.