Note: These rewards only function in the Library the same instance that you get them. The next time to go on a mission and return they will be reset.


Reward 50% Increased jump height in the Library.

How to do it: Grab the vault movement skill to make this easier. Then go to the character customization area, the banner with the thread. Climb the various ledges and get to the top. Here you will find an item that gives you 50% increased jump height in the Library.


Reward You may glide in the Library.

How to do it: After playing for a while this unlocks. A purple bird will be perched on the right (facing the stained glass windows) top balcony in the middle, not far from the ball if that is unlocked. Just interact with it and follow it to the next position until you end up in a secret room with an item that allows you do glide in the Library.

Reward Double Jump in the Library.

How to do it: The top right (facing the stained glass windows) of the library has a red ball that you can push by touching it. Push it to the opposite side, up to the top, on top of a very elaborate red circular carpet to get the double jump scroll in the Library.

These are the ones I found myself. Feel free to comment and I'll add any others.