- Decision: Talk Newboy into wearing his armour or let him assault the castle wearing the magical amulet.
- If you manage to persuade him and to give you the amulet he survives the battle and helps you during the escape by distracting guards. He thanks you for saving his life and gives you a tome about dragons.
- If you tell him you are not sure about the effects of the amulet, he will survive as well, but he will not give you the amulet and you would need to kill him later in order to obtain the amulet.
- If he goes into battle in his underwear only, hoping the amulet will protect him, he dies and you can loot his corpse for the amulet later.
- Reference: Melitele's Heart
Aryan La Valette
- Decision: Kill Aryan La Valette or force him to surrender.
- If you kill him, you will later encounter Mary Louisa La Valette, his mother. It is hinted that the La Valettes may fall under the influence of Nilfgaard .
- If you kill him, along with two other opponents later in the game you will be awarded the Executioner Character attribute.
- If he lives, you encounter him later in the dungeons. The La Valette house remains respected in Temeria. You will see him in Chapter 3.
- If you aid in his escape you will be awarded the Strong Back Character attribute.
- Reference: At the Fore
- Decision: Cooperate with Roche after you have told him the story... or not.
- Most of the dialogue choices lead simply towards Roche giving you the keys to your chains.
- It is a bit ironic, but the less you cooperate, the more information he gives you (e.g. the story of King Demavend's death).
- However, do not pull the string too much because if you try to attack Roche, Ves will appear and shoot you with a crossbow, resulting in your immediate death.
- Reference: None
- Decision: If Aryan lives, encounter him near his cell or in the torture chamber.
- If you find him in the torture chamber, he is just being tortured to sign a confession that the royal bastards are actually his children conceived in an incestuous relationship with his mother. You help him escape, he shows you a secret passage and blows the castle up. Carrying him to safety gives you the "Strong Back" achievement (+50 carrying capacity).
- If you find him near his cell, the confession is already signed and you see him escape from the guards. You help him, he shows you a secret passage and blows the castle up. Carrying him to safety gives you the "Strong Back" achievement (+50 carrying capacity).
- Reference: The Dungeons of the La Valettes
Dungeons: Mary Louisa
- Decision: If you killed Aryan, encounter her near her cell or in the torture chamber.
- If you find her in the torture chamber, she is just being tortured to sign a confession that the royal bastards were actually conceived in an incestuous relationship with her son Aryan. You help her escape but shortly after that ambassador Shilard Fitz-Oesterlen intervenes. He takes the baroness under his "protection" and helps you escape through the main gate. The castle remains intact.
- If you find her near her cell, she has already signed the confession and is being led away by the ambassador. You encounter them later, she persuades the ambassador to let you escape through the main gate. The castle remains intact.
- Reference: The Dungeons of the La Valettes
- Decision: He asks you to participate in his long term research concerning mutations. You can either choose to drink his potion or to tell him you are not interested.
- When encourtering the alchemist again in Act III Geralt says his tongue feels hairy whenever he drinks vodka.
- Appears to just add a critical effects mutagen to your inventory that you can use after unlocking a mutagen slot; or you can sell it if you wish to use a different or Greater mutagen.
- Reference: None
- Decision: After examining the cave you can either accuse her for working for the Squirrels or go to see what she wants to show you or you can pretend you do not know about her work for the Squirrels.
- If you accuse her, she is taken to Loredo's for trial and presumably execution. Note: This also happens if you do not accept the quest at all.
- If you accuse her, but then agree to go with her to see "evidence of her innocence", you and the soldiers are ambushed by the Scoia'tael. She cannot run away, so she is taken to Loredo's for trial and execution.
- If you cover for her, she lures you (alone) into an Scoia'tael ambush consisting of a half dozen elves. She runs away, but you can find her later and decide whether she is to: be taken to Loredo, die by your hand, or let her go/run away. Future consequences of these choices are unknown; she does not appear again in the Witcher 2.
- Reference: Malena (quest)
Bath with Triss
- Decision: Go searching for the Rose of Remembrance alone or with Triss.
- If you decide to go together, you will have an opportunity for sex in the ruined elven baths. To initiate the cut scene, choose the "You need a bath" dialogue option when it is given to you. After the sex scene, you can use Aard on the wall and enter the secret room and open a chest.
- If you decide to go together, but reject her in the elven baths, you can cast Aard on the stone wall. Then you will gain the Resistance to magic ability.
- The secret room is also accessible after a fight scene after the scene with Triss, but it will not contain the Resistance to magic ability.
- Reference: The Rose of Remembrance
Troll trouble (DLC)
- Decision: Kill the troll or help him to find out who killed his wife.
- If you kill him, you can loot him and Louis Merse gives you the contract reward.
- If you help him instead, you will recieve the key to the bandit hideout, which contains loot, yet nothing spectacular.
- Killing him or letting him live is also an objective of a Steam achievement.
- There is an option to help him first but kill him in the end, thus receiving the majority of both rewards (see the reference for more info).
- Reference: Troll trouble
- Decision: When your meeting with Letho is ambushed by the Blue Stripes, you can either give Iorveth's sword back to him or punch him in the throat instead.
- If you give him the sword, he escapes the ambush and can be later found amongst the Squirrels. Using the struggle between the elves and the Blue Stripes as an excuse, Loredo starts a pogrom in Flotsam, resulting in a big fire as some of the non-humans defend themselves. Many non-humans are killed, including the whore Derae; Madame Margot survives. In a cutscene, you will see Triss talking to Philippa Eilhart.
- If you give him the sword, Iorveth will actually treat Geralt as a friend if his path is chosen.
- If you punch him in the throat, he will be overtaken by Roche's men and captured. (If you join the Squirrels later, he will obviously not be present.) Loredo proclaims a holiday on the occasion and you are given a big credit for capturing his arch-enemy. Derae survives, but Margot commits suicide in order to escape punishment for being Iorveth's informant. In a cutscene, you will see Triss talking to Dethmold. When searching for Cedric, you will be attacked by a group of elves.
- There is a dwarf near the Vergen's Marketplace, marked by a blue dot on the map (Iorveth's path), whose behaviour towards Geralt changes according to this choice. Needs further clarification.
- Note: This choice has no practical effect on the later "Crossroads" decision. The game however can be sometimes inconsistent if you do not choose the matching options: give the sword to Iorveth and side with Scoia'tael or punch him and side with Roche respectively. This is a known bug/plothole. E.g.: On Iorveth's path in Vergen Geralt states he knows Triss had a conversation with Philippa, although your choice led to the Triss' conversation with Dethmold.
At the Crossroads
- Decision: Side with the Scoia'tael or the Blue Stripes.
- Main major choice of The Witcher 2.
- Siding with the Scoia'tael will ultimately lead to the so-called "Iorveth's path". You will mount an attack on the prison barge, so that the prisoners are not transported to Drakenborg. If you gave Iorveth his sword so he escaped capture (see above), you can use a diversion to avoid killing most of the guards. After the assault you sail off with Iorveth to Vergen. In the long run this gives Iorveth the chance to prove his good side and to find a new place in the world for him and his Scoia'tael. This path also causes Mottle, Cynthia and also the Succubus to become romanceable.
- Siding with the Blue Stripes will ultimately lead to the so-called "Roche's path". Roche tells you Loredo is a traitor and you mount an attack against his compound, killing him and finding Moril. After the assault, you leave her son with Seherim in Lobinden and sail off with Roche to the Kaedweni military camp near Vergen. When you pick this side, it is inevitable that Prince Stennis later dies in the wraith's mist. This path also causes Ves to become romanceable.
Hero or Avenger (Iorveth's path)
- Decision: Go after Loredo or save the elven women from the burning tower.
- If you decide to kill Loredo, you will have to fight him and his personal guard in the Flotsam Marketplace. You get your revenge on him and you will be able to loot his corpse. The elven women will die in the tower, as no one in the harbour (except Dandelion, who fails) is willing to save the non-humans. At the end of the game you also learn that by killing Loredo you stopped him from selling Flotsam to Kaedwen.
- If you decide to save the imprisoned women, you will have to get to the tower before the flames destroy it and free them from their chains (a quick time action). Quen Sign can protect you from the flames for some time. You will not have the chance to kill Loredo, as he is summoning reinforcements and Iorveth forces you to flee with him. One of the saved elves, Mottle, later offers Geralt sex as a payback for saving her life. She also gives you a key to passage that makes exploration in Chapter II faster. (Note: For information about censorship please see the reference). At the end of the game you learn Loredo sold Flotsam to Kaedwen; therefore, non-humans got it even worse.
- Reference: Mottle
The Succubus (Iorveth's path)
- Note: The decision whether to follow the succubus to her lair with Dandelion or not has no real effect on the game. The only difference is whether you let him gain the experience of some unearthly pleasures.
- If you choose to trust Ele'yas, you simply kill the demoness when you find her, loot her and claim your reward. And, as the evidence suggests, you are pacting with a mad murderer by doing so.
- To side with the succubus, you have not only to choose the appropriate dialogue options, but you also have to buy yourself the surgical tools to take the metal splinter from the corpse in the catacombs and present it as a proof to Iorveth. On the other hand she does not only reward you with some items but she also offers you to spend some time with her doing what succubi do best. She will actually make you feel drunk even some time after she leaves, never to return again.
- Reference: With Flickering Heart
Stennis (Iorveth's path)
- Decision: Kill Prince Stennis or save him?
- If you let the mob kill Prince Stennis, you can use his blood to save Saskia. Lower Aedirn collapses because it does not have a king. The nobility is terrified by this horrific and unprecedented action. On the other hand this means a stronger Pontar Valley under Saskia's rule.
- If you protect Prince Stennis it will be revealed he did order Saskia's poisoning but the laws of the gods remain unshattered. You will not get his blood, so you will have to obtain it from King Henselt later. In Act 3 he tries to get other kings to help him conquer the Pontar Valley.
- Reference: Royal Blood
Henselt (Roche's path)
- Decision: Let Roche kill King Henselt or stop him?
- If you let Roche kill King Henselt, in Act 3 Henselt's body will be in Dethmold's chamber and a Kaedwenian representative will be at the meeting. Kaedwen will also fall into chaos.
- If you stop Roche from killing King Henselt, he will take control over Aedirn.
- Reference: Conspiracy Theory
Captured or Break-in? (Iorveth's Path)
- Decision: To get to Philippa Eilhart in the dungeons, will you break in, or arrive in chains?
- If you are captured, either by choice or beaten in a fight by guards upon arriving in Loc Muinne, you have this chance to have some extra words with Philippa and talk with King Radovid. After Radovid leaves, Shilard tries to kill Geralt, but Geralt gets the drop on him.
- If you choose to break into the dungeon through the sewers, you fight through monsters and get the shorter version of Radovid's dialogue with Philippa. Shilard is ambushed by Geralt and he confronts Philippa.
Triss or Saskia? (Iorveth's path)
- Decision: When you find Philippa Eilhart in her cell, will you help her hoping you can thus lift the curse from Saskia, or will you grab the ambassador and try to save Triss?
- If you choose to help Philippa, Iorveth will appear and together through a series of quests you will find the cure for Saskia's curse (an enchanted dagger), despite the fact that Philippa betrays you in the process. You still have to fight the dragon, but you will afterwards free her from the spell. At the summit Shilard reveals the list of Lodge sorceresses and because of that a witch hunt for all mages starts in the North. Letho rescues Triss, who will be with him when you meet during the epilogue.
- If you choose Triss instead, you will be given an opportunity to unleash hell in the Nilfgaardian camp and free her from the prison. You and Triss go to the deliberations, Triss accuses Síle de Tansarville of the regicides but the Conclave and the Council are re-founded. Later you find Iorveth critically injured by Philippa's magic. He however somehow managed to get the enchanted dagger from her and you take it although you already missed the opportunity to use it.
- Reference: The Witcher 2 ending
Triss or Temeria? (Roche's path)
- If you choose to help Roche, you will attack the Kaedweni camp where you kill Dethmold and save Anaïs. She is by law the heiress of Temeria and you must make a decision affecting her future. The Nilfgaardians will bring Letho to the deliberations and accuse the sorceresses of the regicides, thus ruining the rulers' faith in the Conclave and the Council and a witch hunt for all mages begins. Letho rescues Triss, who will be with him when you meet during the epilogue.
- Decision: Will you hand Anaïs over to Radovid and the Redanians or John Natalis and the Temerians?
- If you hand her to Radovid it is revealed at the end that Temeria was not divided but became a protectorate of Redania.
- If you decide to give her to John Natalis, once you leave Dethmold's chambers you will have to fight Knights of the Flaming Rose. If you spared Siegfried in Witcher 1 the knights will let you go. Thanks to Anaïs, who will become queen one day, Temeria remains independent.
- If you choose Triss instead, you will be given an opportunity to unleash hell in the Nilfgaardian Quarter and free her from the prison. You and Triss go to the summit, Triss accuses Síle de Tansarville of the regicides but the Conclave and the Council are re-established. Roche, who rescued Anaïs on his own, is declared an outlaw and you help him later against the brigands. Anaïs' future looks less bright this way. If Henselt is dead, Temeria will be torn apart by rivaling Temerian nobles, instead of divided by united forces of Kaedwen and Redania.
- Reference: The Witcher 2 ending
The flawed diamond
- Decision: Remove the flawed diamond from Síle de Tansarville's megascope or leave it in place?
- There are some different lines of dialogue referring to this decision during Geralt's final conversation with Letho. Letho will praise Geralt for letting her die, because it was a mercy compared to what the witch hunters would do to her. If Geralt saves Síle, she tells him where he might find Yennefer, but Letho will call Geralt heartless because Síle will suffer greatly at the hands of the witch hunters.
- If the diamond is removed, Síle escapes from Loc Muinne after telling Geralt to go to Nilfgaard if he survives, where he will find Yennefer. She will also appear briefly in The Witcher 3: Wild Hunt, where Geralt will find her in the dungeons during the mission The Great Escape, suffering from abuse (as Letho predicted) and will be mercifully killed by either Geralt or Yennefer.
- If the diamond is left in place, Síle is torn to bits.
Decision: Duel and kill Letho or let him leave?
- Depending on your decision there is a small change in dialogue
- Different journal entries
- If he survives, he makes an appearance in The Witcher 3: Wild Hunt
Reference: The Assassins of Kings