Retribution is the third level of A Plague Tale: Innocence. The mission takes place inside a monastery and in its dungeon. This is the first stage where you actually come across rats.
Meeting with the monk
You start inside the monastery. You can walk around the building and inspect it. To continue the mission, go up the ladder located to the left of the door. It leads to the balcony surrounding the yard. There, you will find a monk.
After a short conversation, you have to go down and across the yard to get to the next segment. There, talk to a monk. He will agree to help. Follow him until you reach the entrance to the undergrounds.
Escape from the rats
This is your first confrontation with the rats. Head towards the entrance to the undergrounds. The torch will keep you safe, but not for long. You will soon get to the barricade. To jump over it, you have to put the torch into the holder hanging next to the barricade.
There's a torch on the other side, so you have nothing to fear. Go straight ahead and grab a stick from the sheaf of grain . Approach the lantern and set it on fire . You are now able to proceed forward. Armed with light, climb the stairs. They'll take you to the crypt yard.
The path to the crypt
Unfortunately, the way to the crypt is blocked by rats. You have to reach it from a different side. Jump over the barricade on the right. You will find yourself in the corridor with two broken chandeliers. To pass, you have to shoot down and the third one. To do this, shoot the chain.
From the corridor, you will get into a room filled with rats. Your goal is the door located on the opposite side of the room. To reach it, you need to climb up the ladder. There, take out the slingshot and shoot down one of the chains of the chandelier.
The chandelier will start moving, creating a passage for you.
Move further down the stairs - you will reach another room. This time you won't have a light source. Use food to distract the rats. Shoot down pieces of meat that hang in the room. Thanks to this, you will be able to pass freely further.
Move forward - you will reach another room with rats. This time, jump on the table and go to the other side. A torch is behind the bars. Amicia can't get there. You have to use Hugo. Pick up the beam and send the boy. Unfortunately, he won't be able to come back. Instead, he will lead you to the other end of the room, where he will give you a torch.
You now have to leave Hugo for a moment. Insert the torch into the holder located nearby. This way you will be able to jump over the barricade safely. You reach another corridor. It will lead you to a large room filled with rats. Before entering, take a stick and light it from the lantern. This way you can enter the inside and light up the fireplace.
Hugo is at the top of the ladder located on the other side of the room. Use the slingshot to shoot down two chandeliers. Then, take a stick, set it on fire and go towards the first of them. You have to set it on fire. Then, go back for the stick and light it from one of the chandeliers. Thanks to this, you will be able to reach the third one. Set it on fire. Hugo is now able to go down.
After this action, return to the first chandelier and exit through the door located directly from the entrance. You reach the crypt.
This is the last sequence of the mission. You have to do one thing - take sticks, set them on fire by using the nearest source of fire and move to the next fire source to light it. Once you do that, you will have to repeat the entire process.
After reaching the barricade, you will be close to the end of this level. You have to sprint, otherwise, you will get eaten by rats.