Can't play a sh map

Garry's Mod general
#1

I see incomplete textures and errors …no music or enemies…do I need the entire hl game or what?

plz help…need to play this.

#2

Entire hl game? you have it cut or what.

#3

lol pirated

#4

its original

#5

you might need Half Life 2…

#6

You’ll probably need CS:S.
GMod comes with all HL2 textures and such.