11.1 Extract model files from L4D2 pak file.11 Extract the Weightmap for Each L4D2 Survivor.9 Import the Model into 3D Editing Tool.7.2 Get a Model from a Source Engine Game.7.1 Create a Model from Scratch Using 3D Modelling Program.
Check out the newer tutorial: Modding a Left 4 Dead 2 Survivor)
