1. First, enter the main entrance of the palace and see an entrance on the map.

2. Secondly, there are two entrances to the left at about the same height as this entrance. The map on the far left shows a room next to each other.

3. There are three monsters in the last room. Wear a ninja suit and hold a weapon with an attack rate of 90 or more. Take a level 3 attack potion and save it. Glide behind it and attack in one second. That's it. brush.