This achievement is a stepping stone on the way to
There are 53 abilities to unlock by spending adventure points. You will need a lot (≈25,000) of **adventure points** to unlock these, but I finished the game with a spare 6360 points.
If you need help locating Adventure books, purchase the Exploration guides as follows: Vatican Books at the Post Office, Gizeh Books in Gizeh Village, and Sukhothai Books at Tongdang's Hut.
**Adventure points will mostly be obtained by the adventure storyline, fieldwork, discoveries, mysteries, etc. Smaller amounts of adventure points can be earned by burning the Propaganda posters or aiding NPCs having conversations relating a need (e.g., a photo or basket of fruit) and having this in your inventory or finding it in the near vicinity allows you to interact with them (e.g., offering a photo or placing the basket on a table).