This is the Predator wall by the Nasty Sons Crew, the thirrd of four moviet hemed productions on one wall.
After the Hulk and The Guardians of the galaxy they painted the scene from the first Predator movie where Arnold Schwarzenegger and others are hunting for the predator in the jungle.
The fill of the letters was done just like the vision of the Predator (thermal view). A white base coat was done first to make the colors come out as vivid as possible.
Check out the video about the making of this wall and also some pictures.