Realistically, it should be impossible to unlock even half of Garou's powers. Keep in mind that Garou reached that level while fighting with Saitama and in the world of Naruto it should be impossible to meet someone that strong and you can't reach that level with training alone.
So with the Shinobi God alive it's almost strange that wars come to Konoha, the guy can tame tailed beasts like a walk in the park and summon giant wood golems, not forgetting his wise body that in theory, could give him a life of about 200 years