Yo, recently I've been having trouble getting textures to show up in some HL2 community mods on Steam (Requiem of Science, Artic Adventures: Episodes, and Amalgam) Can someone help me on this? Is it because I don't own Counter Strike Source, or is it just not downloading right (Textures missing include but are not limited to, Skybox, Floors, Doors, etc.) Please comment responces

Try checking file integrity for all the Source engine Half-Lives, Portals and Source SDK Base 2013.
UPDATE: While playing Requiem of Science, the goo looked like PINK SAUCE