ico_player_stealthStealth skill shortens the distance at which you will be seen by the enemy and increases the time it will take them to spot you. It is improved by moving stealthily in the vicinity of the enemy. New perk points unlock at levels: 3, 5, 8, 10, 13, 15, 18, 20.

Can be increased by sneaking.

Stealth Perks

Name Requirements Effect
Takedown None Let's you knock people out from a crouching position.
Daring Debonair Stealth Lvl 3 After committing a crime, you get a +1 bonus to Strength and Vitality until you're caught or leave the scene of the crime.
Rain Man Stealth Lvl 3 You move almost silently in the rain. The noise of your footsteps is reduced by 70%.
Crouching Chameleon Stealth Lvl 5 When crouching without movement you get a 30% Stealth bonus.
Stealth Kill Stealth Lvl 5 Allows you to kill from stealth. You have to have a dagger.
Ordinary Mug Stealth Lvl 8 When you're wanted, people are less likely to recognise your face and soon stop looking for you.
Slim Fit Stealth Lvl 8 Lowers the noise of armour and other equipment by 20%.
Dog Person Stealth Lvl 10 Dogs won't bark at you.
Et Tu, Brute Stealth Lvl 10 Your attacks from behind will be one third stronger.