Still waiting for Luke Triton though...

You knew it's the same actors who do the voice of Layton and Louis in French x)

For a very short way to describe;
In Blender on the Material tab (red circle button) the name of all the materials are what the Source Engine looks for when searching for your character's materials, so name them that makes sense for you.

Then in the .QC file with the $CDMaterials line, you'll want to put down the location of where your materials and textures at. So if you have Luke textures in the materials, models, custom, then luke folders, you would edit the $CDMaterials line as:
$cdmaterials "models\custom\luke\"
Note that Materials folder isn't included because Source assumes all textures will be in the materials folder.

Been trying to work on doing some other Layton characters for L4D2. How did you manage to combine all the different textures into one, or if not how did you get the compiler to read all of them correctly? Very new to this, so sorry if I'm being thick. Feel free to message me on Steam or Discord (DearestHershel#8651). Cheers!

Awesome, I'll hold out till then!

Currently, no. Some time in the future I'll be porting the L4D2 mods into Gmod

Really good model! Is there a way to use this in gmod?

good

this what came in my mind for what will layton say to luke when they're in a zombie apocalypse:
Now luke my boy surviving in a zombie apocalypse is what true gentleman does

Critical thinking is the key to success!