The quest begins after you escape the black dragon, when you reach the next gate.
Roche departs, leaving you with Foltest, who asks you to find another way inside the temple grounds.
While standing in front of the gate, turn around and descend the hill. When you reach the village, swiftly turn left and you will see a female citizen running towards you. She is shot in the back by one of Foltests archers.
Woe to the Vanquished side-quest begins now.
If you continue to explore the streets, you will see some soldiers talking to the Temerian prisoners.
Additionally, if you decided to tell Newboy (Melitele’s Heart side-quest), that the amulet will protect him; you will find him dead on the streets. Make sure you retrieve the amulet, and then go around the prisoners, and look for a corpse standing in front of an opened door.
Use the Igni Sign to burn the wooden wall, and move forward until you see a well, guarded by several Temerian soldiers.
Take the guards out, and then descend into the well, and into the sewers.
Combat Tip: In the sewers you will encounter only Drowners. Make sure you use your silver sword while fighting them, and try to set them on fire with the Igni Sign.
If you open your map, you will clearly see the point that you must reach. Since there are no special enemies inside this subterranean maze, you wont have any problems in exploring it, but keep in mind that wooden walls can be destroyed with a fire spell.
Eventually, on the other side, you will find a ladder which takes you to the surface. Exit the passage, then turn right and follow the stairs up. Kill the guards in the round chamber to the right.
Combat Tip: Dont forget to switch your swords. Use the steel sword against humans and the Yrden Sign to defeat your enemies faster.
Now, head through the large iron gate in front of the round chamber and follow the stairs until you reach a locked door. To the right is a hole in the wall. Climb the wall and exit the tower.
In the next area, kill the soldiers guarding the door to the left, and enter the building.
Two more soldiers will be encountered in the first chamber. After you take them out, exit through one of the doors and you will reach the temple grounds.
Take out the remaining soldiers, and make sure you loot their corpses. One of them (the one wearing the horned helmet) carries the key to the gate you must open for Foltest.
Grab the key, and return to the first chamber (where you killed the two guards). Use the key to open the iron gate, and then activate the lever.
Return to the courtyard and talk to Foltest. After the dialogue, Roche interrupts your story again.
NOTE: At this point, To the Temple quest ends, and the next one starts: Blood of His Blood.