someone know what's this achievement?

When i see the moonieglare post and the radiance post i know this situation was going to become a meme and i'm laughing right now

presenting the main characters from left to right/ presentando a los personajes de izquierda a derecha

My custom night icon

...

Here is the Datonecoolguy Poster for this game

NEWS/NOTICIAS

There's something wrong with my half life 1/

Algo no está bien con mi half life 1

heres my icon

La página volvio y unas noticias/the page Is back and some news