Once in game open the debug console with ` (the left quote character, top left of standard keyboard layout, to the left of 1).
Once that opens get a list of commands by typing 'commands' (I think from memory, but typing 'help' or probably most anything will return an error message along with the correct syntax to get a list of {all?} commands).
I haven't really used it myself but quick memory is that there are options to add gold and mana, along with changing quirks, killing enemies, restoring party health, etc, etc. Lots of stuff. Probably worth setting up a quick testing game to play around with whatever commands you might end up using so as to not wreck your main save with something unexpected.
Hope that helps a little.