Ahoy! Just a quick announcement that I've utilised Steam's new Achievement Group system for the game!
The existing achievements now come in the following categories:
Main Story Progression
Product Quests
Automation
Major Side Quests
Odds and Ends
Sales
Outcomes of the Horse War
Card Holders
Endings
Challenge Runs
Just Shop Mode
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The Really Hard Stuff

(I don't have all the achievements in my own game...)
This is a pretty cool change from a design perspective. I've previously held back on adding certain things from the game as achievements because I felt they were too hard and achievement hunters would be mad. But being able to plonk those into a subcategory means players can aim to 100% only the categories they care for. It's not set in stone yet but I'm considering what can be added now.
If you have anything you'd like (or not like) to see added as an achievement, drop it in the comments and I'll take it into consideration.