This download looks like an addon. You need to extract the downloaded zip and put the addon folder in your Garry's Mod addons folder. You should end up with a directory structure similar to below:
-
steamapps
-
common
-
garrysmod
-
garrysmod
-
addons
-
BloodModRealistic <-- Addon folder!
-
e.g.
-
lua
-
maps
-
materials
-
models
-
etc
- BloodModRealistic/
- materials/
- decals/
- alienflesh/
- shot1_subrect2.vmt
- shot2_subrect2.vmt
- shot3_subrect2.vmt
- shot4_subrect2.vmt
- shot5_subrect2.vmt
- Blood1.vmt
- Blood1.vtf
- blood1_subrect.vmt
- Blood2.vmt
- Blood2.vtf
- blood2_subrect.vmt
- Blood3.vmt
- blood3.vtf
- blood3_subrect.vmt
- Blood4.vmt
- Blood4.vtf
- blood4_subrect.vmt
- Blood5.vmt
- Blood5.vtf
- blood5_subrect.vmt
- Blood6.vmt
- blood6.vtf
- blood6_subrect.vmt
- Blood7.vmt
- Blood7.vtf
- blood7_subrect.vmt
- blood8.vmt
- blood8.vtf
- blood8_subrect.vmt
- edonburn.vtf
- egonburn.vmt
- flesh/
- Blood1.vtf
- Blood1_subrect.vmt
- Blood1_subrect2.vmt
- Blood2.vmt
- Blood2.vtf
- Blood2_subrect.vmt
- Blood2_subrect2.vmt
- Blood3.vtf
- Blood3_subrect.vmt
- Blood3_subrect2.vmt
- Blood4.vtf
- Blood4_subrect.vmt
- Blood4_subrect2.vmt
- Blood5.vtf
- Blood5_subrect.vmt
- Blood5_subrect2.vmt
- splat1.vmt
- splat1.vtf
- splat10.vmt
- splat10.vtf
- splat11.vmt
- splat11.vtf
- splat12.vmt
- splat12.vtf
- splat2.vmt
- splat2.vtf
- splat3.vmt
- splat3.vtf
- splat4.vmt
- splat4.vtf
- splat5.vmt
- splat5.vtf
- splat6.vmt
- splat6.vtf
- splat7.vmt
- splat7.vtf
- splat8.vmt
- splat8.vtf
- splat9.vmt
- splat9.vtf
- yblood1_subrect.vmt
- yblood2_subrect.vmt
- yblood3_subrect.vmt
- yblood4_subrect.vmt
- yblood5_subrect.vmt
- yblood6_subrect.vmt
- ReadMe.txt
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