In a medium sized bowl, stir together the beef, eggs, onion, oatmeal, ketchup, salt and pepper, half of the soup, and 1 tbsp of the Worcestershire sauce. Mix gently with your hands until combined, but don't overwork.
Place mixture in a loaf pan and mold the loaf.
In a small bowl, combine the brown sugar, the rest of Worcestershire sauce, and rest of the soup. Mix well then pour over the top of loaf.
Bake 75 minutes or until the internal temperature reaches 155-160ºF.