I was surprised to see how few players on Steam had completed the Explorer achievement -- which just requires visiting every map.

 

I don't feel like I skipped anything -- went all the way to the bottom of the Endless Paths etc.

 

Is there a complete list of maps somewhere so I can see what I missed?

I think you need to enter every single shed and outhouse too.

There is a directory called fogofwar somewhere in your Pillars folder - that looks like a complete list. It's 152 files and the achievement asks for 152 visited places (see patch log).

 

I'm just curious if you have to visit them in a single game... That, and what I missed. :D

I think you need to clear the fog everywhere (would mean finding all secret areas).