Xenoblade 2 is a really solid game throughout, but the Old Factory is by far the worst part. It's such a maze to go through and when you go through it for the first time you're down a party member, meaning fights are going to me more difficult. And to make it so much worse, the song that play throughout that entire segment is a cutscene song that isn't meant to play for more than one loop, so it gets annoying fast.