Recent content by Dual

I've got City 24, but i only got HL2: Episode 2 and CS: Source do i need other HL2 content?

So, i enter the game and i got alot of error textures, i already have the Half Life 2: episode two, and CS: Source game textures and etc, and subscribed the half life rp content on steam workshop, but i still got missing textures.