Clear Episode One only using the knife.

Finish off an enemy with the knife.

Defeat 20 enemies with stealth attacks in the main campaign.

Clear Episode Three.

Use Moira's light to stun 50 enemies in the main campaign.

Defeat Mutant Pedro in Claire's Episode Two.

Clear Episode One.

Put an unrelated object on a shadow plinth.

Use a lock pick to open something.

Escape from the guest house.

Obtain something by closely examining an item.

Have Moira stun an enemy and Claire follow up with a physical attack in the main campaign.

Defeat the Proto Tyrant.