Need assistance with Gmod? Let me know how I can help!
Need assistance with Gmod? Let me know how I can help!
HL2 materials should be included with Garry's Mod by itself (the standalone release). The key textures come from Counter Strike: Source and Half Life 2: Episode 2. HL2: Episode 1 doesn't offer anything useful. Team Fortress 2 assets aren't typically required, but they're free to download. Portal content is generally not needed, though some items might be helpful. The main focus should be on CS:S, HL2 Episode 2, and TF2 first. Portal 2 and Left 4 Dead 2 content aren't supported right away, even though Steam Workshop has patches for them. Left 4 Dead 1 content could work in theory but isn't confirmed.