Here is the full list of all 15 Echoes of the Fey: The Fox's Trail achievements worth 1,000 gamerscore.
Avoid a troublesome case.
Complete day one of Sofya's investigation.
Finish day two of Sofya's investigation.
Finish Sofya's investigation and resolve Tiatha ir-Adech's case.
See all optional side scenes with Eduard Galkin.
See all optional side scenes with Heremon ir-Caldy.
See all optional side scenes with Arkady Vanzin.
See all optional side scenes with Inspector Luka Teteriv.
Share a kiss with an ally before a dangerous confrontation.
Protect a friend by lying to your client.
Tell Tiatha ir-Adech the truth.
Change Sofya's haircut or clothing.
Uncover the role played by one of your sources in the Tiatha ir-Adech case.
Deduce the truth about Heremon ir-Caldy on your own.
Forge your name in the low mage's appointment book.