Check which location is still silver or gold colored in the map.

Gold location still has a puzzle or bonus action to be done.
Silver location still has bonus action to be done.
Gray locations are finished locations.

Also check the progress of your gameplay.
The progress of the score or gameplay can be seen by using the P key or clicking on the Progress icon (with 3 lines on it) on the cards-mask icon at top left of the screen (left of inventory).

If any of them is less than 100% - that is where you are still missing some actions. You have to go back to the location and see what you have missed.