User blog comment:The Supreme Diamond-Hooded Eagle/Crimson Polls II: Number 17/@comment-4829046-20130831023235/@comment-5546424-20130831205931

If you're asking about how Fairy knows about the daggers being "cosmetic tomahawks", play the Fort Wolcott mission in AC3, but, instead of a tomahawk, equip a dagger and watch the scene where Connor uses a zipline to infiltrate a building.