If I'm thinking of the same thing, it was made by Shounic (the guy who used to make Backcap) but all his videos from this era are private.
It might've been made for one of the Dreamhack LANs.
Edit: found it I think, it's narrated by Bren though https://youtu.be/Tjw3X8RQQlA?si=Levxcrp6RoZZwflW