I finally got to the end! The Crypts

Unlocked Krypts Explorer! Reach the end of the krypts! You find a room that seems special, and soon spot a chest. You open it to find...

You take your completed map back to Blake. He doesn't seem interested in what you have found. He takes out 500,000 sP that he uses to pay you for your map. He also gives you access to the Treasure Room where you can choose an item that has been found in the crypts recently.

Just curious, why is it spelled Krypt for the achievement but the game is called Crypt?

Congrats on making it to the end!

Thank you!