Hurrah, got it working now, managed to increase my health in Dead Cells to a ridiculous amount. It gets reset when you get any modifiers, but it's a start.
Also managed to increase the amount of money. Next, souls and multipliers
[update] OK, souls was startlingly easy to find.
Just play through the level until you get to the shop. You should have a few souls. Search for the exact number of souls using a 32bit signed search.
Spend 1 soul, repeat. In 3 steps you'll find the figure. I now have 16 million souls
Care to explain a little better if you could? Please and thanks