No worries. Perhaps your first visit is more enjoyed by using mods and console commands to learn the marvelous challenges of this new biome. You paid for it. Enjoy it as you wish. Later you may feel comfortable enough to give another seed a go with all the challenges in place. Folks IRL compensate for lack of vision by honing their other senses. The Mistlands creatures all have a unique sound. And the developers certainly did not intend the game to be unplayable. Bad for sales.