Here you will find a guide on how to get the Gold Mission Rewards.
This guide will include all of the different objectives in order to get the Gold Rush Trophy / Achievement, which requires you to get around 70 Gold Rewards from various different missions.
MISSION 15) Pouring Forth Oil – IV
1) Kill all Train Guards before Sean fires a shot
2) Clear the Baggage Car of loot
3) Escape the Law within 1 minute 30
4) Get 10 kills in Dead Eye
5) Do NOT use Health items
After the section with John Marston you will meet up with Sean who is about to search the Train Car. However, upon doing so a guard opens the door and your task will be to kill that said guard, one that suddenly spawns above the Car and 2 of which are inside the actual Car, take all of these guards out before Sean manages to bring himself together.
There are several items inside the Car, start by searching to the left of the door in which you enter from and inside the Cabinet, there is also a Bottle on the top next to the Tennis Rackets. There are also items amongst the mail on the grey sorting cabinet.
Turning around from the Sorting Cabinet and you will find a cabinet open them to get yet more items.
Finally there is a rather large chest on the floor, search that and you should now have everything.
As for getting 10 headshots, simply use Dead Eye on the guards, there should be more than enough of them to manage to easily get this one done too.
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