Should I Help Cleaver Witcher 3?

There are a few ways to clear out the casino and the arena without Cleaver's help so if you want to complete this quest make sure you go see Cleaver before doing anything. All you have to do is agree to help the dwarf's men kill all of Whoreson Junior's men at his casino and arena.

What happens if you talk to Cleaver Witcher 3?

Talk to the Cleaver

Speak to Cleaver and agree to help him take on Whoreson and his men. This completes the first stage of the The Gangs of Novigrad secondary quest. The remainder of the quest enables you to complete Get Junior's arena and casino objectives quickly and aggressively.

Should I kill the Nilfgaardian soldier?

Just then, they see one of the Nilfgaardians survived, lying nearby. Roche wants to spare him while Ves states they need to kill him. Ultimately it comes down to Geralt's decision, so choose whichever path you wish. If you choose to kill him, Roche will finish him off despite being against it.