LogFAQs > #945479902

...game currency?
for exp you're using up the EXP books you get. if that's what you mean then yes, that's the main method of raising EXP.

regarding new skills:
dupes = constellations, which unlock stuff. MC will get these through the game, the first one you can buy from the jewel icon person in town, even.
ascending = new skills as well, means you hit the level cap and unlock the next batch of levels.

healing without food: level up, goddess statues, certain characters like Barbara.

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"Maybe it's a tentacle, molesting the planet itself. - Aschen Brodel.