Sneak

Skill Sneak
Modifies	Chance of being detected while sneaking
Initial level	5% + 3 x Agility
Related perks	Silent Running, Ghost, Silent Death, Thief
Related traits	Small Frame

Quiet movement, and the ability to remain unnoticed. If successful, you will be much harder to locate. You cannot run and sneak at the same time, unless you take Silent Running perk.

Sneak is subject to many modifiers, its mechanics differ from those of Fallout1/2.

• FOV: When your character is out of the opponents Field Of View, the sneak is automatically sucesfull.
• Minimum distance: Up to 3 hexes from opponent, your character is always visible, regardless your sneak skill.
• Bonuses:
  • Ghost perk: +20%
  • Occluders: standing near scenery objects like barrels, tables, walls gives you +50% bonus.
• Penalties:
  • Weight: -1% per 1Kg of the total weight of items you carry.
  • Armor:
    • Leather Armor and Leather Armor Mark II: - 25%
    • All metal armors and combat armors: -50%
    • Powered armors: Sneak is disabled.
  • Direction - direction of the opponent has big impact, basically, the area around opponent is divided into four parts, and each part modifies your sneak skill value by reducing it (not substracting) by following percentages:
    • Front: 90%
    • Front-sides: 60%
    • Back-sides: 30%
    • Back: 0%

After all bonuses and penalties have been applied, the final formula is:

20 + opponent's Perception * 3 - previously calculated skill / 6

If the result is greater than zero, opponent detects sneaking character.