Way back in 2011, I started working on a mod called Still Only in Saigon.
It was intended to be a proper Source engine adaptation of the GoldSrc mod Heart of Evil. However, due to my lack of mapping experience I quickly archived this mod.
But, I managed to get the three screenshots back from the original page, and decided to upload them here for "historical" purposes. One day I might go back and try again. 'Might' being the key word.