I post here hoping someone can answer to my dilemma. Basically I did the Weyandt’s Revenge jumping puzzle at least 3 times in the last few days and every time I get to the end of the puzzle I get the chest, the merchant but the achievement doesn’t unlock… The third time I followed a guide step by step on the wiki, in case I was missing something, but apparently I did everything right. Does anyone has the same issue? Thank you!