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Stealth

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Stealth is a mechanic which was first introduced in Update 7. When the Tenno is audially or visually undetected by enemies, they are able to sneak past more easily to avoid combat, as well as perform devastating stealth attacks. However, suspicious activity raises enemies' alertness when encountered, and this increases the difficulty of the mission. When alert, enemies they may become more careful, get backup from other enemies or trigger the alarm control panels to summon backup from other rooms. A full alert occurs when the Tenno is directly detected by audial or visual means: enemies will pursue the Tenno until they are too far out of range, but still remain alert and highly sensitive to the Tenno's presence for a period of time. Enemies noticing suspicious activity but not the Tenno themself will be on a minor alert, where they become more defensive. Alertness decreases over time.

While most missions in Warframe do not require or explicitly reward stealthy play styles, the game provides an assortments of weapons, mods and a different damage multiplier that enable an alternative game play for advance players who seek challenges.

AlertnessEdit

Not to be confused with the mission type, Alert.

Avoiding direct enemy sight and hearing is one way of being detected, which puts enemies on full combat alert. When enemies detect the Tenno, they will attempt to pursue the Tenno, while getting backup by summoning nearby allies or activating alarm control panels. Additionally, their range of vision will expand and they will be able to spot you or your sentinel from far away, even if you disengage. You can tell once they clearly notice you or fire their own weapon that enemies nearby have become fully alerted. Even after you have been detected, backup in nearby rooms may not know what the threat is, and will be put into a state of minor alert.

Distant gunfire or suspicious activity (eg corpses) may temporarily put enemies in nearby map tiles in a minor alert. These enemies keep watch behind cover, or patrol with their guns raised and are more sensitive to your presence. As they don't know exactly where you are, they may not directly engage, instead being more careful, looking down corners and expanding their vision. This can usually be heard by the Tenno, as enemies talk while in this state. The map will change colour depending on the level of alert of the room. Cloaking will lower their alertness.

  • Enemies can only see things in an frontal cone, but their view can be further restricted by the environment. Enemies are bad at detecting objects at a distance, or anything somewhat above them. Toggle crouch for better stealth runs. You'll have a smaller model so you can hide your silhouette better. Also, it seems that enemies are less likely to notice you while you are crouching. The speed at which you move is more controlled, so you will be less likely to bump into the enemy before a stealth attack prompt appears. While more convenient for timing your attacks, rolling is a great way to shift longer distances while staying crouched.
    • For example, as enemy range-of-view (before alert) is <180 degrees, crouching in a corner nearby a door effectively exposes the back of any Grineer that walks into the room. As a different example, you hide behind a crate to block line of sight and conceal your presence. When an enemy is patrolling side to side (from your point of view), you
  • Loud noise caused by breaking objects, firing weapons, or activating abilities, will alert nearby enemies from all directions. The bigger the noise, the further it travels, and the more likely it will alert an enemy. However, certain weapons and abilities are silent, such as the Paris, Kunai, and Despair. These weapons may be used to perform ranged attacks while undetected.
  • Single hit kills are preferable, as a complete kill ensures your target cannot recuperate and alert attention. Performing an unsuccessful melee stealth attack will alert the enemy (this happens often when in a high level area, or when stealth attacking heavy Grineer), and so will bumping into enemies will cause an alert whether cloaked or not. Similarly this includes failing to kill an enemy with a silent ranged attack or ability.
  • Control panels are scattered around the level and if activated by an enemy will alert the entire room, and may spread the alert to the whole level. Killing the enemy before a control panel is touched (they take about 1.5s to complete the alert) can still allow you to remain undetected. If an alarm was set off, you can reset the alarm by going to another control terminal and hacking it after clearing a room without further spread of notice. Do this quickly before reinforcements come and you can resume your stealth run.
    • Even when the control panel has been accessed and an alarm has been given, enemies will lose track of you when the last group of enemies you killed is not close enough to them to set them on alert. They will wander as if you were not detected and it is possible to finish a Stealth side mission this way.
    • By sprinting through and leaving the current room quickly, you can sometimes avoid the alarm being set off, or the alarm will go off but since you are in another section of the level enemies won't notice. Using a frame with a sprint mod can increase this chance of escaping.
  • Cameras make loud alarms and alert nearby enemies when they see you, but again, if they are destroyed and nothing is in range to take advantage of their alert, you're safe. Rooms with two cameras are difficult to get past undetected without destroying them.

Stealth AttackEdit

Sneak Prompt

As long as an enemy is unaware of your presence, a stealth attack may be executed on them. To perform a stealth attack, approach an enemy from behind, and activate the stealth attack prompt.

Standard melee attacks are affected by a 400% stealth damage multiplier when attacking unalerted enemies, or when cloaked by an ability (Smoke Screen and Invisibility). This damage multiplier changes the color of regular damage pop-ups from white to yellow (similar to critical hits). Critical hits while under these effects will still appear yellow, but will multiply the 400% melee damage multiplier by the amount of critical damage on the weapon (e.g., 400% x 3x critical = 1200% damage). Successfully performing a stealth attack will deal a massive amount of damage during a special animation. The attack's final damage depends on the melee weapon type that's used:

As these multipliers account for total weapon damage, equipped mods (including Critical Chance and Critical Damage mods) will also affect the stealth attack's final damage. Stealth attacks inflict Finisher damage which is unaffected by armor. Damage value pop-ups appear yellow.

Enemies are not always susceptible to increased melee damage for every melee attack. If the player comes into physical contact with an enemy while attacking it, the damage bonus will be temporarily removed. Attacking from different angles and giving the enemy some distance will help improve the consistency of the attack damage.

Enemy EligibilityEdit

CBNefStealth

Bosses can indeed be stealth attacked

Mechanical enemies do not grant a stealth attack prompt. Mechanical enemies immune to stealth attacks are listed below.

Grineer

Corpus

Some Bosses, such as Captain Vor and Sgt. Nef Anyo, can be stealth attacked. The damage done will usually not be sufficient enough to kill them in one hit. Non-humanoid Bosses such as Phorid and Jackal are immune to stealth attacks.

Special Warden enemies grant bonus damage with stealth attacks, allowing a larger chance of instantly killing them, which is crucial in order to complete their host mission with the most points.

AnimationEdit

Stealth attacks use the same animations as rear finishers. Like normal finishers, stealth attack animations vary according to what class of melee weapon the player is carrying. Examples of stealth attack animations along with other finisher moves can be found in the melee gallery page.

Silenced WeaponsEdit

Noise Level has an effect on Stealth as well. While Noise can be eliminated with mods like Hush and Suppress, the weapons below make no detectable noise to enemies.

TipsEdit

  • Be patient.
  • Check your surroundings to sneak up on an unsuspecting enemy without interruption.
  • Good timing means you can avoid patrols. Always position to attack enemies from behind.
  • Do not eliminate an enemy if it is being watched by another enemy. If enemies see a corpse that has not disappeared yet, they might be alerted for a short period of time. Be sure not to be in their line of sight.
  • Staggered enemies don't make sounds, but they become alert and will alert others if given a chance to recover. If you did not kill an enemy with a single hit, keep it staggered by stealthy means and you'll be fine. Cold procs will lengthen the amount of time an enemy stays staggered.
  • A fully upgraded Hush is able to make all primary weapons silent, and Banshee eliminates weapon noise with her Silence. Cloaking prevents visual detection.
  • Stand to the side of a door to open it and peer slightly by moving the camera. You can see around the left edge of obstacles by changing the camera to hang over your left shoulder (default is H).
  • If you have a Shade with Ghost ability, consider sprinting toward an enemy to activate it quickly.
  • Beware of breakable reinforced glass, unless it is part of the player's tactic to cause a controlled lock down to eliminate all enemies inside a chamber. This action will not cause a high alert.
    • The Corpus Turret is the only enemy weapon that is "silent" and won't generally attract attention if it attacks players.
  • Having a Sentinel equipped may be detrimental to your stealth ability, as it does not hide behind low cover. If you do bring a Sentinel make sure to remove their targeting precept mod or the weapon itself.
  • Throwing knives (Kunai, Hikou and Despair) are good weapons to quickly eliminate a small pack of enemies without alerting anyone
  • Very long range weapons such as the Latron, Snipetron and Vulkar, are less likely to attract attention. This is most likely because the weapon noise at the barrel is far greater than the impact noise.
  • If you can't finish off a target in one shot, attempt to eliminate them quickly with another silent weapon or they will be able to alert their allies.
  • It is advised to use a Codex Scanner while you are doing a stealth mission, due to the fact that the Codex Scanner can show you enemies within 50 in-game meters even through walls and behind cover.

NotesEdit

  • Self-Destruct environmental hazard will spawn extremely alerted enemies at start. To resume stealthiness, kill all alerted enemies in the area quickly and hack the nearest panel to reset the alarm. They will revert to unalert state after some time.
  • Stealth kill will disrupt Shade's cloak. Warframe abilities will not.
  • Against high level enemies, successful stealth kills are not guaranteed.
  • Consecutive stealth attacks are possible. It would take the victim a split second to be alerted after being stealth attacked, but not immediately.
  • The Warframe is immune to toxic damage during the attack animation when stealth attacking a Toxic Ancient. It will resume taking health damage after the animation has ended.
  • The codex scanner can allow the player to see enemies behind walls, at a fairly reasonable distance (about 50 meters.) However, if used to scan, it will remove the scanned enemies from the player's view.
    • If a certain enemy has been fully scanned in your Codex, they will be highlighted in green rather than orange.
  • Shade will still cloak the player if he/she is holding down the trigger of a continuous rifle such as the Synapse.

GrievancesEdit

There are some flaws that have not been addressed.

  • The practicality of attempting assassination on heavy and shielded units, especially purely mechanical enemies such as Corpus MOAs and Ospreys.
  • If you aren't at the same altitude as the target, the prompt will not appear easily. 
  • Bumping into an enemy will put them in an alert status and void your attempt at stealth killing them.
  • Prompt will appear and disappear unexpectedly when the enemy are in alert.
  • Not all enemies can be stealth killed. It is hard to know whether an enemy type can be stealth killed until the player approaches behind the target.
  • After each stealth attack, you finish standing up, which might reveal your position. You will need to release and re-press the crouch button to return to crouch position. If you are using a toggle crouch key, simply press it during the animation to return to crouching when the attack completes.
  • Dropping off a ledge will also cause you to stand upon landing.
  • There appears to be no inherent benefits of stealth gameplay aside from the prompt for an assassination and lower enemy spawn rate, which is counterproductive given that weapons level via kill experience. Though stealth can be a great end-game challenge for more experienced players.
  • A glitch can occur when stealth attacking Infested Ancients, Heavy Gunners or Corpus Techs. Upon entering the stealth attack animation, the enemy will shrink to roughly the player's size. (This shrinking glitch can also occur when using Ash's Blade Storm. Blade Storm has a possibility to also shrink Grineer soldiers, as well as a few bosses, including Lieutenant Lech Kril.

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