How to make a cup head roulette challenge?

1, first of all, you need to go through all the levels of the first level and get through the mausoleum.

2. Secondly, talk to the villain on the lower right and start the road of roulette. Npc can row a boat and bring the protagonist into the roulette wheel.

Finally, you can unlock the roulette wheel by completing the five-level dialogue with the king.