Heat oil in a large stock pot. Add onions and cook for 1-2 minutes. Follow with adding red, yellow and habanero peppers. Cook until soft.
Add bison to pot. Break up meat with a wooden spoon. Brown on all sides until cooked, about 10 minutes. Add garlic and cook for another minute.
Stir in chili powder, paprika, cumin, tomato paste, and brown sugar. Add beef broth, beer, beans and crushed tomatoes. Bring to a boil. Reduce heat to low and let simmer for 2 hours. Season with salt and pepper.