I wish that Yhorm was more of a challenge... He's nearly impossible with Storm Ruler and with Storm Ruler he's dead in five hits...
Could've at least made it so that an RT attack dealt reasonable damage to him or made him take more hits from Storm Ruler or maybe even make him stagger much less from the attack...
Exactly! From the trailer and intro sequence I was like "Holy crap this boss is going to be AMAZING!" and whilst I he had amazing music, a fitting arena and awesome attacks, he was such a pushover... I was sure he'd be the most badass of the bunch, to me he still is, but just too easy...
This can happen in NG+ and beyond. People can put their red sign outside the boss fight and it may summon them in to take the place of an NPC phantom coming out of the Mirror Knight's shield. It's one of the coolest (and rarest) invasions, one which really should have been capitalised on and made into a covenant or something (and I was crazy disappointed something like this isn't in DS3).