Have you played all the titles of the Feast Series?
The stories are all connected and will tell you what you still not have found even if you play old ones now!
https://store.steampowered.com/bundle/49915/The_Feast_Series_from_1_to_3/
With the 3rd title released, Bundle is being released now for 1st to 3rd titles
Source: Steam Community (opens in a new tab)