This achievement can be done literally in a single deposit about an hour after the start of
Chapter 2.
You’ll first need to get to the point where you can free roam anywhere you want around RDR2’s map. Afterward, you’ll want to complete 2 very specific treasure hunts that will earn you
$3500 before even touching a story mission. By using
$1500 you’ll also be able to completely upgrade your camp to the max and unlock powerful tens and even
Fast Travel which is a must for this game.
To upgrade your camp and deposit the money, simply walk up to the box outside of Dutch's tent.
The Poisonous Trail Treasure HuntStrange Staues Puzzle Guide