I have watched NL nearly every day for around 10 months. I quite enjoy his videos, especially the Isaac ones. Recently, with the release of Afterbirth, NL has been playing Daily Runs regularly. The Daily Runs provide an incentive to players, score that is used to rank themselves. This has resulted in NL getting so competitive to the point that it is disturbing and unsettling how obsessed he is with achieving a high score. In a normal Isaac run, he'll talk about various things and just be himself. In a daily run, such as this one he states the need for extra points on a level of obsessiveness. He always took into account that picking up items resulted in a slight decrease in his score which was a bit abnormal with how he always kept that in mind but the main example is Boss Rush

As Boss Rush provides a score bonus, NL was eager to make it to Boss Rush. He spent nearly the entire video discussing making it to Boss Rush and practically skips all of Depths II for the sheer purpose of extra points. His behavior reminds me of a few months ago, where he was obsessed with his streak so much that he would refuse to take Missingno in an effort to keep his streak, he skipped many important rooms to make it to boss rush, and to put it bluntly, he wouldn't shut up about boss rush.

My fear is that NL's daily runs are heading towards disaster, if they aren't there already, and that the NL in these videos is vastly different from the NL in normal run videos.