Sorry to sound like a newbie, but that's what I am. After eyeing this game up for so long... every time I went to buy more 40k with my O/H I was like I'm gonna have to buy that game just for the art work. Now i'm super into it. I just finished the campaign that comes in the core box. Is it worth buying an expansion for a new campaign or playing through the core set again with maybe another investigator?or another difficulty? gain some experience, customise my deck a bit and then move on to an expansion?

Please try and not comment many spoilers.

Frankly, I think they are all valid options. Go with what your heart and wallet says.

I just finished the Dunwich Campaign. I highly recommend it, it is an absolute blast! And there are some fun new investigators and player cards.

I agree, I think the core set campaign is a great introduction, but if you can afford it, the Dunwich Legacy campaign is amazing! Plus, it gives you loads of extra player cards and investigators, which makes going back to revisit the core campaign even more fun.

But, if you want to keep costs down, there is absolutely nothing wrong with replaying the core campaign several times. I have yet to achieve the best outcome, so I will definitely be going back to it soon!

The standalone expansions(Rougarou and Carnivale) are also great/cheap ways to experience another scenario or two.