Videos sampled below:

The Making of Guild Wars: Celebrating 25 Years of ArenaNet
https://www.youtube.com/watch?v=cpm2fBvrAbw&t=468s

ArenaNet Retrospective Video
https://www.youtube.com/watch?v=9GwKGbNKQHE&list=LL&index=35

Guild Wars: Behind The Scenes
https://www.youtube.com/watch?v=oX_PnJqsX88&list=LL&index=74

Guild Wars E3 trailer:
https://www.youtube.com/watch?v=v5__UlnqwJ4&list=LL&index=75

Making of Guild Wars:
https://www.youtube.com/watch?v=KOrReEq_uPk&list=LL&index=76&t=204s

Making of GW: Nightfall
https://www.youtube.com/watch?v=YCP7yDLGEHg&list=LL&index=77&t=2255s

Guild Wars Championship DVD:
https://www.youtube.com/watch?v=OdJM0xsbHhs&list=LL&index=86&t=2124s

Halloween/Christmas GW1:
https://www.youtube.com/watch?v=c5lPnFY3il0&list=LL&index=80
https://www.youtube.com/watch?v=-fh6bTK2eKQ&list=LL&index=83&pp=iAQB0gcJCQ0LAYcqIYzvsAgC

Old login for GW1
https://www.youtube.com/watch?v=J9L7bHtfTyg&list=LL&index=85

Sampled multiple clips from IGN, for WoW Dragonriding and others.

Lost the pirate segment footage so I sampled this:
https://www.youtube.com/watch?v=CzCZ_2uBP-g&list=LL&index=8&pp=iAQBsAgC

Used this clip of a cosplay:
https://www.youtube.com/watch?v=C3I4wpHshuw&list=LL&index=7

Used this edited clip of Illidan torching Sargeras
https://www.youtube.com/watch?v=asEIQ0aNW8c&list=LL&index=8

Articles sampled:

BLDHBLOG Daniel Dociu Interview:
https://bldgblog.com/tag/daniel-dociu/

Old and New Tyria Compared:
https://projecttyria.blogspot.com/

An article about Blizzard North employees leaving:
https://www.gamespot.com/articles/cofounders-leave-blizzard-north/1100-6030882/