: ''Unlock Knife Fighting Skill Levels 51-60Poisoners Cut, Poisoners Cut 2, Poisoners Cut 3, Poisoners Cut 4'' : ''Opening Thrust 6Backstab, Backstab 2, Backstab 3, Slice 6Backstab 4'':: ''Backstab 5, Blur Cat Backstab 6,Backstab 7'' : ''Gut 6Surprise Throw, Venomstrike 6Surprise Throw 2, Surge Cut 6Surprise Throw 3,Surprise Throw 4'':: ''Opening Thrust 7Surprise Throw 5, Fending Blade 5Surprise Throw 6, Slice Surprise Throw 7''