Soldier Helmet Quest - 50 level

Monsters on way:
Reward: Experience - 50000
We head to the north west exit of West City and go to the lighthouse next to Red Robin Castle.
When we reach the lighthouse, we have to enter the secret entrance, which is located under two boxes.
After descending, we head south then east and use zanzoken to go to the chest.
There is quest nearby Red Glover Quest