Place a large sauce pot over medium heat and add the ground beef and diced beef, breaking it up into small pieces with a wooden spoon.
Add the chopped onion, bell pepper, jalapeño, and chipotle peppers. Cook until the meat is browned and the onions have softened.
Add the garlic and sauté for another 30 seconds.
Fold in the pumpkin puree, beer, beans, sweet potatoes, diced tomatoes, and chicken broth.
Season with chili powder, cumin, salt, cinnamon, lime juice, and bay leaves, stirring everything together.
Let the mixture simmer over medium-low heat for at least 30 minutes, stirring occasionally. If the chili becomes too thick, add more water.
Remove the bay leaves and discard.
Serve warm, adding your favorite toppings if desired.