Great job as always! I didn't know about Tuor's axe before now. I guess I need to brush up on that bit. I do have a few quibbles, though.
Hurin's axe at the Battle of Unnumbered Tears should have been included. He killed 70+ trolls and orcs before being subdued.
On a related note, you said Huor was Hurin's older brother. Huor was the younger brother.
Azaghal wounded Glaurung with his knife, which was what caused the dragon to retreat.
I thought Dain's axe was red because it was bloodied instead of being naturally colored red. However, I could be wrong on this.
Despite my nitpicks, great job on the video. I'm not much of an axe person, but I may take a second look at that weapon.