Seath The Scaleless
Dark Souls is known for being brutal, but the fact that you HAVE to die in order to beat the dragon boss, Seath the Scaleless, is just completely contrary to basic video game logic. When you first find the giant worm in the Crystal Cave region, you won’t be able to damage him, so the best thing to do is just let him kill you (hopefully you spent your souls beforehand). You’ll wake up in a prison cell afterwards, then you can go show Seath what killing someone for good looks like.