I ended up retracing my steps and I found the other two parts, Ill attach the locations here that I found them but upon looking at it further im not sure if theyre related to the secret quest. I turned them in to Valyra in the roof of the world hoping they would maybe give some hints but they didnt say anything substantial, although the Ruination of night did seem to give me some good hints I think it was only coincidentally related to the secret quest. @DK_Death I put the locations of the other two here, the quest started for me when I picked up Dirge of Night even though I already had found Ruination of Night, can you take a screenshot of End of Nights text before you turn the quest in? I forgot to take one and it removes the parts from your inventory when you turn the quest in, just in case it is related to the secret quest it would be good to have a screenshot of the third part here.
