[Sekkusu]

The models/player/terror.mdl comes from the CS:S GCF file, the Team Offset is from GetUnknown, I found it myself, though it can be found easier using Team rules probably, but I haven't needed to mess with that at all. You need to follow the instructions on setting up a server plugin fully, which includes installing the SDK files on that computer and referencing the directory from your Makefile.