Ambush

Ambush is a feat.

Feat

	Ambush
When attacking an illuminated target from out of the darkness with a single-target ranged weapon you ignore half the target's evasion and your critical chance is increased by 20% plus 0,3% for each stealth skill point.
Requirements Perception 6 Stealth 40

This situational feat can increase your critical hit chance even over 100%. At the minimum requirement of 40 stealth, it gives a 32% (20+0.3*40) increase. Does not require Stealth Mode.

A target is considered illuminated when it is in sufficiently bright light, such as near a wall light fixture or a thrown Flare. Dim lighting like the glow emitted by Mindshrooms may not work. The attacker must remain in complete darkness, as any ambient light ruins the chances of an ambush attack.

You will see Ambush! scrolling combat text always when making an ambush attack even if the attack doesn't hit, unless you have disabled Scrolling Combat Text for Player Special Attacks in Options. A yellow icon next to a targets name will also be visible when its selectable for an ambush attack.

Critical hit chance sources
Source	Crit	For	Type	Notes
Dexterity	Varies	Melee attacks	Base Ability
Recklessness	+7%	Weapons, Unarmed	Feat
Recklessness	+10%	Weapons, Unarmed	Specialization
Psychosis	+15%	Psi	Feat
Psychosis	+10%	Psi	Specialization
Steadfast Aim	Varies	Pistols	Feat
Survival Instincts	+30%	Weapons, Unarmed, Psi	Feat	Only when <30% HP
Survival Instincts: Critical Chance	+10%	Weapons, Unarmed, Psi	Specialization	Only when <30% HP
Scrutinous	+7%	Weapons, Unarmed	Feat
Pellet Mayhem E	Varies	Shotgun attacks	Feat
Body Horror E	+3%	Weapons, Unarmed	Feat	Only against fleshy foes
Ambush	Varies	Ranged weapons	Feat	Situational
Seeker Goggles	Varies	Ranged weapons	Headwear
Neuroscopic Headband	Varies	Psi	Headwear
Wizard Hat	+10%	Psi	Headwear
Death's Grin E	+2%	All	Headwear
Infused Rathound Leather Armor	Varies	Weapons, Unarmed	Armor Suit
JKK Tactful Jacket	+2%	Ranged weapons	Armor Suit
Coretech Energizing Vest	+3%	Energy pistol attacks	Armor Suit
Phantom Dancer E	+3%	Sword attacks	Armor Suit
Psychophract Exoskeleton HD	+3%	Psychokinesis and Metathermics psi attacks	Armor Suit
Infused Rathound Leather Boots	+2%	Unarmed attacks and fist weapons	Boots
Sørmirbæren Staff-spear E	+3%	Psi	Spear
Høddurform E	+5%	Psi	Spear
Red Dragon E	+20%	Decapitate	Sword
Focus Stim	+15%	Weapons, Unarmed, Psi	Drug	Temporary
Absence	+16,6%	Psi	Food	Temporary
Core Chips	+2%	Weapons, Unarmed	Food	Temporary
Hardcore Chips	+5%	Weapons, Unarmed	Food	Temporary
Mystery Candy	+5%	Weapons, Unarmed, Psi	Food	Temporary
Tattoo: Anarchy	+1%	Weapons and Unarmed attacks	Tattoo
Tattoo: Skulljacked HD	+2%	Psi	Tattoo	Only while wearing armor suit with (unmodified) armor penalty of 50% or higher
Escalated Psionic Innervation HD	Varies	Psychokinesis or Metathermics psi attacks	Special ability	Temporary

A Commoner with the ambush icon to the left of its name.

Specializations

• Ambush (10 levels) — Further increases the critical chance bonus from Ambush by additional 2% for each specialization point.

History

Underrail 1.1

• 1.1.1.0 - You will now see which targets qualify for Ambush feat proc based on their and your current location. The indicator will be placed left of the target's health bar.
• 1.1.0.14 (Expedition) - Shotgun will no longer trigger Ambush since it's not a single target weapon

Underrail 1.0

• No changes

Underrail Alpha

• 0.1.11.0 - description updated
• 0.1.4.0 - feat introduced