@SıмΞоп and PIKA RYAN L+R makes your immediate surroundings semi-transparent for clearer view. Otherwise your character might get hidden by trees and you can't see where you are. It's just a visual effect. Anyway this is an ongoing game (there will be an Act 3) so I won't download this until it's completed. Expert translators know that every line could be a foreshadowing so it's best to wait.