The badger has a good connotation when it appears in your dreams, as it announces your victory over all your opponents and enemies. You may have recently won a 'fight' against people you competed with for a certain position, function etc. or are going to be successful in anything you want to get involved in. Your success and your victory over competitors will be mainly due to your persistence and vigilance.
If you dream about an injured badger, then you should wait for a while until starting the battle against your 'rivals', as an unhealthy badger stands for an individual who is not yet ready to face his opponents.