This is a very early version of what I've been working on; a faceposer version of one of the lines from Studio Trophis' 19-minute audio drama. While most of the dialog is complete, the ingame actor still does not express the level of emotion I'm looking for.

Faceposer is a tool in the Source SDK (available in Steam with most HL2 games) that allows one to lipsynch HL2 character's mouths, time their facial expressions and animations, as well as give ingame commands. Faceposer is not a part of Garry's Mod, and Gmod was not in any way associated with this video.

Credit to Phillip Sacramento for his excellent voice acting (even if he doesn't know this exists)