Put the linked file in your etqwpro folder and set g_showDemoHud 1 in console, then load a server demo and you should have a (mostly) working HUD.
Stuff that doesn’t work (might be fixable):
[ul]
[li]Shows “Following xxx” message, you could probably turn this off by removing it from HUD file
[/li][li]Scoreboard (and other key binds such as command map) don’t work
[/li][li]No hitbeeps
[/li][li]Ammo doesn’t update properly
[/li][/ul]
Other than that (and some stuff I didn’t notice, probably) it works.