Walkthrough for Captain De Santas Downfall of Red Dead Redemption.
1. Go to L mark in the Map to meet Luisa Fortuna.
2. Mount up a horse and follow the group to the Yellow Dot.
3. Remember to not kill De Santa, you need him alive.
Tip: You can just run to De Santa and there is no need to kill his soldiers, your team will take care of them.
4. Once you are chasing De Santa, take out your Rope and catch him.
5. Call your horse and head to the Yellow Dot.
6. Kill De Santa or walk away and let the rebels take care of him. Look back while walking away if you didn't kill him yourself, to see a nice scene.
7. Mount up and go to the Yellow Dot in the Casa Madrugada.
8. Kill the soldiers in front of the building.