Rofl, caps lock like mad in the last chapter. I haven't read any Lovecraft, but I always expected such a battle to be more immersive and to place a heavier emphasis on the sentiment of fleeting sanity. and mentions of the characters clutching their sanity just doesn't do it for me. The Harry/Padma interaction was probably the best aspect, it is something not often achieved in fanfiction. 4/5 for a story strictly the sum of its parts.