Stealth and Perception

Overview

A player or critter's Perception is simply the maximum distance, measured in feet, at which it can detect hostile targets. For players, it also affects the maximum distance at which targeted powers can be used against that enemy. Critters aren't limited this way. Once a critter becomes aggressive toward something, its AI remains aware of that target's exact location and can chase and attack it regardless of Perception until it reverts to peaceful.

The Stealth of a target effectively subtracts from the Perception of anything trying to detect it.

Example: Normally, if I stood 20' from a Troll, he would need a Perception of 20 to notice I was there. If I had a Stealth of 35, he would need a Perception of 55 to detect me.

If you have at least as much Stealth as the Perception of what's trying to see you, you will be invisible no matter how close you get.

Everything has some amount of Perception to begin with. The exact amount varies greatly:

• Minion, pet, Mastermind henchmen (all tiers): 45
• Lieutenant: 50
• Boss, Elite Boss, Archvillain/Hero: 54
• Turret, Giant Monster: 100
• Sniper: 149
• player: 500

Nothing has any Stealth inherently. It must be granted by powers.

Notice that players have much higher Perception than critters do. Because of this, everything has separate Stealth values versus critters and versus other players.

Snipers and Stealth

In addition to having a much larger than normal Perception radius, Snipers and Rikti Drones apparently ignore Stealth completely.

Attacking Stealthy Opponents

Stealthy opponents can be affected by powers even when they can't be detected. They simply can't be targeted. PBAoE powers can hit enemies if they're in the area, as can AoEs that are aimed at a spot on the ground. Targeted and cone AoEs can also hit hidden targets if aimed at visible ones close to them. Assisting can not be used to send attacks at a target that a teammate can see but you can't.

Maximums and Minimums of Stealth and Perception

See the article on Limits to for more information about maximum and minimum values for stealth and perception.

Perception Powers

Here is an example listing of the perception bonuses or penalties granted by various powers. Note that Tactics applies its bonus to everyone on the team within line of sight and range. This listing is not necessarily complete.

Power Name	Percentage Modifier	Absolute Modifier
Tactics	+28.28% – +86.5%	+141.4 – +432.5
Scrapper and Stalker Toggles, such as: Focused Senses, Cloak of Darkness, Danger Sense, Focused Accuracy	+60%	+300
Targeting Drone, available to Blasters	+60%	+300
Glacial Armor, available to Tankers	+60%	+300
Smoke available to Controllers and Dominators; Flash Arrow for Defenders, Masterminds, and Controllers; Smoke Grenade available to Blasters; Blinding Powder available to Stalkers	-90%	-450

The Perception bonus from Tactics varies depending on the level and AT of the character using it. See the Leadership Power Pool page for more details.

Stealth Powers

Here is an example listing of the stealth granted by various powers. Most stealth powers give the same bonuses as the Stealth power from the Concealment pool. This listing is not necessarily complete.

Power Name	PvP Stealth	PvE Stealth
Stealth and equivalents, including IOs that give +Stealth, and PBAoE Stealth such as Shadow Fall and Steamy Mist.	389	35
Super Speed	0	35
Invisibility and equivalents	611	55
Phase Shift and equivalents, including Quantum Flight and Nebulous Form	222	20
Stalker Hide (all sets)	500	150

Sources conflict on the strengths of Group Invisibility and Superior Invisibility from the Illusion Control powerset. One reference says they're both slightly weaker than the pool Invisibility power. Another says Group Invisibility is slightly stronger than baseline and Superior Invisibility is almost twice as strong.

See Also

• Limits