Preheat your oven to 375°F (190°C) and grease a 9x5 inch loaf pan.

In a large mixing bowl, combine ground beef, ground pork, chopped onion, and minced garlic, followed by breadcrumbs, egg, milk, Worcestershire sauce, salt, and pepper. Gently mix until just combined.

Fold in Swiss cheese, crumbled bacon, and chopped mushrooms until evenly distributed.

Transfer the meat mixture to the prepared loaf pan and shape it into a neat loaf.

In a small bowl, mix ketchup and brown sugar until smooth. Pour the glaze over the meatloaf.

Bake for about 60 minutes or until the internal temperature reaches 160°F (71°C).

Let the meatloaf rest for 10 minutes before slicing.