Probably the first time I heard the chains was before I was going to kill Nyx. My friend had already told me what they were so I shouted "I has Armaggedon and I'm not afraid to use it" to my TV. Oddly enough, the chains stopped rattling at that point.
when I first heard the chains (I was only a lvl 5) I stood there like an idiot wondering what it was, and then I saw the enemy on the radar thingy so I ended up turning around the corner to where death was and just yelled out oh shiiiiiit!!! Where's the stairs?! ._. And Akihiko is so cute ^^