The Ofieri one requires you to have all parts of the gear for Geralt (armor, trousers, boots and gauntlets), at least one sword and the horse gear. Currently all you may acquire is the saddle after racing and beating the merchant. CDPR forgot (yes, forgot) to add the saddlebags and blinders to the expansion. A merchant was supposed to sell them so until they fix this, the achievement is unattainable.
As for the Rose Dethorned achiev, often times when attacking a camp, one or more of the damn little Fallen Knights will run away so you think you've killed them all and looted the camp when the game continues to believe it hasn't been cleared because of those few that may have escaped. Sometimes meditating helps. Sometimes going off and doing something else but later revisiting the camp help. Sometimes (as is CDPR's history with such things) NOTHING helps and it never triggers as complete.
Come on, folks. Did you really expect anything different from CDPR? Just wait until next year and Blood and Wine is released. That is if it doesn't get pushed back from June to October. Will anyone still be playing this by then? Will anyone still care?