Take down two or more enemies with one shot.

Increase your item slots.

Put an unrelated object on a shadow plinth.

Complete the "Mia" videotape without being spotted by Marguerite.

Use a lock pick to open something.

Block an enemy attack by guarding.

Obtain something by closely examining an item.

Complete the game in explorer mode

Defeat 50 enemies with headshots

Find a Journal Note

Stealth take-down 5 enemies

Defeat 100 enemies in a row without dying in combat

Find a Treasure