Get The Green Gem:

(Be sure to have the elegant mask)Ok so after you beat the first boss (that big lake monster) it will be dark get out of the house and get back on the boat no worries once it is dead thats how it will stay. Go towards the 2 blue beacons and enter the cave. Then there will be a merchant before you enter the shack go left towards the barrels shoot them and or break them with your knife and then there will be a box a action icon will appear that says push then press A and push it till it wont go any further then turn right and go up the ladder and the there will be more big boxes push them till they go no further and then break and or shoot the barrels and in the middle there will be 3 barrels break and or shoot them then take everything there will also be a green gem take it and combine it with the elegant mask and then the prices skyrockets from 3000 to 10000 with one gem.