Fun climb. Apparently you can start out going left or right. I personally think left is off route. You can't really traverse later so pick your side. I think right is better. The crux is between the 3rd and 4th bolts.
Once you have arrived at the Upper Crag and passed Corosion. Take the trail and continue left past Entropia. You will need to scramble or chimney up a rock. Just past that, you will arrive at another small open area with a large flat boulder on the ground as well and a climb to your right, 13 Guerreros.
4 U bolts and U anchors.
BETA PHOTO: The left route of 13 Guerreros.
BETA PHOTO: The right route of 13 Guerreros.