Ranks
What each point adds3 ranks
RankEffectAmount
Rank 1Reduces the chance enemies have to detect you while in Stealth mode as if you were 1 level higher.5
Rank 2Reduces the chance enemies have to detect you while in Stealth mode as if you were 2 levels higher.10
Rank 3Reduces the chance enemies have to detect you while in Stealth mode as if you were 3 levels higher.15
Unlocking it
What you need first
NothingOpen from the first point in Subtlety