here's what I see when I listen to this:
0.00 - 0.30 - Two mexicans are in the desert, they are brothers, and have been committing crimes across the country for decades together, but where we join their tale, the eldest brother, has just been shot through the heart, the music begins to him falling to the sand in slow motion, a look of terror and hatred on his face.
0.30 - 1.00 - The younger brother begins to run over to his fallen bandit.
1.00 - 1.29 - The younger brother catches his brother before he hits the ground, there is blood everywhere, he shakes him, but he is already dead.
and everything after that, is the youngest brother bringing an onslaught upon the enemy.