Destroy all five training dummies, then leave the area, and spend some time doing other activities. Inside one of the tents in the War Camp, outside of Geralt's, are five training dummies. To do this during the Prologue, you must have an unpatched version of the game. To unlock the 10% Experience bonus perk, you must destroy 10 training dummies. Note: You can also save as often as desired if you think you might lose.
It is possible to earn 200 Orens approximately every 20 seconds using this method. The arm wrestling champion in Chapter 1 (Bart Bargee) and Chapter 2 (Adam Pangratt) can both be fought as often as desired. You can also repeat this mini-game as much as desired. This mini-game allows you to bet 100 Orens instead of the usual 30. Select 'Let's Go' to start the mini-game. The champ will tell you to climb the ranks by defeating others, but the option to wrestle will still be available. Talk to him, fulfilling every topic, then ask about arm wrestling.
Next, leave for the King's inner camp, where you will find the arm wrestling champion near a fire. You can even skip the Blacksmith if desired. There are more arm wrestlers, but you will not need to challenge them all. At the camp, you can talk to the local Blacksmith outside the Canteen if you want to start practicing your arm wrestling skills for later. In Chapter 2 with Roche, you will arrive in the War Camp.
