I'm at the central mining pit where you go down to rescue that kid and it's just impossible to beat the boss! I've watched a video on YouTube which was kinda pointless as the guy was using cheat codes for max health etc. You have to chain attack him to hurt him I think, but it's impossible to build up the chain gauge since every time you get a vision he's going to attack someone and you warn them is resets the chain gauge! I honestly have no idea how people have beaten this boss. Also, he just keeps spawning minions too, so you have them to contend with. I might just cheat