You are hereby immediately required to explain your exact procedure in the process of producing that
I used Cannonfodder's extremely unstable, buggy, and unreliable
StudioCompiler to decompile the MDL files found in hl2_misc_dir.vpk
Then I imported Zombie_reference.smd into Milkshape, converted the .tga texture files found in hl2_textures_dir.vpk to .png, and applied them.
I then imported the animation and exported with Torque DTS Plus
oh yeah I forgot
"Cyclic" should be checked for idle and run animations