X-Blades

Getting the first three soul achievements should come naturally as you play (the mini-boss enemy from Hall of Columns gives 5,000,000 himself). However saving up 50,000,000 doesn't always happen accidentally. Souls don't carry over from playthrough to playthrough so if you reach the Finale without having 50 million, simply return to the Hall of Columns to rack up a few more.

Tips:

• Keeping a high multiplier will give you a multiplier on all the souls you collect (the maximum being 5x souls).
• Defeating the Galapago (mini-boss) in Hall of Columns with a multiplier of 4x or 5x can potentially net you this achievement in one kill.
• If you're not much of a gun user, hold off buying the gun upgrades until after you hit 50,000,000.
• Remember that the farther in the game you are, the more souls each enemy will give you.

Alternatively, Just use the All Skills cheat 50 times listed HERE. Each time you use it you acquire 1 million souls.

Remember NOT to do this in your "GOOD" play through cause it will unlock all dark spells and effect your ability to earn the "GOOD" ending.

For all the soul achievements, they are NOT cumulative so you must have that many in your soul count. You should get the first 3 Soul achievements naturally. If you haven't gotten to 50 million by the Hall of Columns, play through it as you get around 14 million per round. This level also helps for monster kills.