This download looks like a map. You need to place it in your maps folder inside the Garry's Mod folder.
You should end up with a directory structure similar to below
Don't know where the Garry's Mod folder is or how to extract zip files? See more useful installation tips.
Ded, KamerYektaa, tumasbagames, Love my bitch♥, SAYMYNAME, azov_wars, zehra_klkci11, Mr.Duck Rabioso >:v, lukmsilva13, Dmitry, c.young133, Komutan Logar, xoraz, Kush-ii Chan, spotty, Medvedich, combine_stalker1, mindaugassbossjr22, МАСЛИНА, banettetejode.yt.2.0, Harambe Uchiha, El_Panchito357, donika1202, poho, obibest2016, pivnyov08, MinderGames, Polak 501, lucanluca7, Kopek, NoveL, dima.bender.2004, rimysik77, tdayonsol, JohnZick, Daveszek, TyNik, mzsianmorales, hellfishe, denisalexandru00, S.T.A.L.K.E.R., lonewanderer2140, BLOB, [GalaxyRP]Harper, SooS?, fenn2019, Advisor, Falq, ID14, kneesockscanty +363 others
