Rebel Galaxy
37 Achievements
50-60h
Filthy Lucre
Reach a Net Worth of 50 Million Credits
14.3%
How to unlock the Filthy Lucre achievement in Rebel Galaxy - Definitive Guide
This counts your total assets, so you should easily get this in normal progression.
Upgrading your ship, buying weapons, value of cargo, etc, all counts.
You can do missions for more credits, mine for things to sell or use on the markets, or just play the game normally and take everything you see.
Playing the markets is easy if you just buy things below their regular value and sell them on at a higher than normal value. Certain galactic events, such as war increase certain items prices, but this is a time consuming way of making money usually and you're better off raiding merchant ships or just doing missions and taking cargo from destroyed ships.
By the end of a normal run, you will probably amass about 20m Credits so you'll have to farm this by doing missions or cargo runs. It's a lot faster to do missions as in the later systems they sometimes pay nearly 2m credits per. It also doesn't have to be 50m on hand, just earned lifetime. You can see your net worth by hitting Options. In the beginning, Credits will seem hard to come by but eventually you will reach the end game systems which offer you 2m credit missions so you'll soon be swimming in Credits. This trophy will come naturally, especially if you want to upgrade your ship and modules to their highest (MK6 modules, Dreadnaught class ship).
If you are a trader then pay special attention to commodity system average prices and special events, as special events create opportunities to buy really low and sell really high e.g. a Celebration event demanding diamonds at high prices and a Mining Boom selling them at low prices. You can refer to this wiki for detailed info on each event and which commodities are affected during each event: LINK
The amount of current capital is shown in the upper right corner in pause mode (current cash in the upper left). The accumulation of 50 million is quite significant in terms of time and it is quite likely that it will not be collected during the main part of the game. After the end of the storyline, you can collect additional funds in the process of obtaining other long trophies.