Glitch with Old King of Chess
Just thought I'd put it out there now, considering I've seen it first hand and saw a couple people discussing it about ten pages back, that the Old King of Chess boss fight in the Chaos Dungeon has a rather rare but still recurring glitch in which the ability to successfully Gun Break/Break him or his mirrors in the second phase, which is the only way to beat him and his defeat is required for DLC 3, will not work. The skill to do so is a thing, but the result after doing so just does damage depending on whether you Gun Break or normal Break him. I tried for weeks once I encountered this glitch and sadly, there is no fixing it unless you recode the issue or simply...Restart the Chaos Dungeon and make your way to his depth again. The attack which I believe is called Zex Calibur Charge ignores Immortality, Defense, any revival rings, any amount of HP you have.etc. It's required that you Break him or his mirrors in some way as he's charging it. A rather annoying issue...But still a thing I thought should be brought up.