I don't get saying that is has legs and body like a dachshund and then conclude that its not the body of a hunting dog. Dachhunds whole layout is how it is to facilitate hunting.
Huh, I had no idea they were originally a hunting dog. From this very bias source, but has a decent amount of information: https://www.dachshundstation.com/hunting-dachshunds/
You need a several Dachshunds to take out a badger. Some will probably die during the hunt. Badgers are larger and have much bigger teeth and huge claws. What is that tiny dog's face going to be able to do?
They also used to arrange fights to bet on called Badger Baiting...