Divinity: Original Sin Enhanced Edition

Unlocked by meeting Mangoth, in the Immaculate Cathedral at coordinates X210, Y450 in the central northern part of Luculla, after the initiation trial. The path to the Cathedral is lined with numerous mines. Once inside, light the four candles in the entrance hall to open a door that allows you to proceed further in.

Go south from the entrance of the tutorial dungeon, then move east to find a talking clam on the beach at coordinates X459, Y70. Throw it back into the ocean to get a reward.

Solve the candle puzzle during the Trial of Ascension inside the Source Temple.

Enter Hunter's Edge in southern Phantom Forest. There are two bridges leading to this area from eastern Luculla.

Enter the Esmeralda's cellar through the trapdoor at coordinates X255, Y205 at the back of her Esmeralda's house during the "Murder Investigation" quest. The key to enter through the back door is found upstairs. Remove some of the hams hanging on hooks in the cellar to uncover a small button. Press it to move the bookcase away from the doorway that leads to a hidden room containing a "suspicious" bloody knife. Interrogate Esmeralda about it.

At the start of Act III, you are asked to enter the Wizard's house at the east end of Hunter's Edge. After finding the key in the beehive and using it to access a hidden trapdoor at coordinates X315, Y15, you will enter the cellar containing some of the Wizard's servants. You will get a quest to disarm the traps in the house to allow the servants to return upstairs. Proceed through the house. In the room with the inactive mirror portal, light the two unlit candles. You will eventually reach a room that contains the House Defenses Master Switch. Flip the switch and return to the cellar. Talk to the mother of the family to earn the achievement.

Meet Billeh Gahr inside the Black Cove dungeon. One of your characters will be placed on a trap that will trigger if they move. Use another character (unlink if needed) to move one of the crates that are in the room to reveal the button that deactivates the trap.

Dig one of the mounds in the Cysael town graveyard with a shovel and Nemris will appear. He will question you about the contents of the Philosophy of Death book that he wrote. The book, which is blank, is found in Cecil's library. The correct answers to Nemris' questions are 2, 2, and 1.

Reach the Mirror Dungeon puzzle through the two sets of trapdoors near the cliffs above the beach at coordinates X110, Y295 and X150, Y290 in western Cysael. Send two teams of two characters through each trapdoor. Each area will contain a set of elemental pillars and an inscription describing the order to use them. Using the pillars in one area in the correct order will cause an enemy to spawn in the other area. Killing it will drop either a round or square amulet. Use those amulets to bring down the barriers at the end of two passages in each underground area to earn the achievement. Note: If you have completed this dungeon but did not earn the achievement, return there, then pick up one of the amulets and place it back on the platform.

After finding all three clues implicating Esmeralda during the "Murder Investigation" quest, talk to Aureus to have her thrown into jail. Go to Esmeralda's smithy shop. A Legionnaire appears and will escort Esmeralda away. Visit her in the jail under the Legionnaire barracks, and she will reveal that Evelyn is the true culprit. After you have confronted and killed Evelyn, return to Aureus and have Esmeralda released from jail.