UPDATE: The adventure map "Mother" I planned to make is being changed drastically. The whole first part is being removed from the map (the area you can see in the picture above), and the map is now a pure Portal 2-based map. This will still be called "Portal 2: Aftermath" as the map I started on was called that. The reason for this is that I was able to convert the texturepack I used before to a functioning resourcepack (or, and MCF mod did it, thanks!).