Collectibles
Collectibles and what they change
Counts from the map tool
The map project counts 24 Brave Hearts, 24 Wise Hearts, 14 attack books, 14 defense books, 39 clues, 5 key items, 147 experience statues, and 257 secret passages. Four Brave Hearts raise a health rank. Four Wise Hearts raise a magic rank. Red books raise attack. Blue books raise defense. Those rules come from IGN's beginner page, not from the pin layer.
This hub does not list every statue. The heart page and the book page say the same thing about their own gaps: the totals are verified, the coordinates are not republished from another map.
Where to go next
If you want a finish line, use the 100% checklist. It is built from trophies and these categories, and it marks anything that is only a count. Clues include the melody sheets and the Feat of Strength note. They are not a second currency.
What I ran into
I kept wanting to paste coordinates. The counts are a public tool's summary. The pins are their work. I wrote the rules, which are what change your stats, and linked the pages that admit they do not have every room.
Questions
How many heart pieces are there?
24 Brave Hearts and 24 Wise Hearts. Four of a color raise one rank.
What do the books do?
Red books raise attack. Blue books raise defense. There are 14 of each in the map count.