Yeah dont change the profile file, only the save. i dont know if there is a specific way of messing it up but typing random things would probably work.
As an extra here, it's safe to alter your save data if you only mess with the obvious stuff, and still lets you be "OP". Find where it lists your gold, food, talent/skill/magic points, etc, and just adjust those numbers. Keep in mind it'll only list your available points if you actually have some to use! I tend to start a new game, get like, 1 level, and then just not spend my points. Then when I start editing the save it'll have those points listed in the file, and I can just edit them to be like, 10000 points or whatever (same with gold/food). You can also do the same for your stats, though be careful what you set your str stat up to, unless you like getting pounded by wolf girls even when you win the fight against them :P