Ghost (bonus)

''"Ghost" redirects here. For Deus Ex: Human Revolution achievement, see Ghost (achievement).''

Ghost is a stealth-related XP bonus in Deus Ex: Human Revolution and its DLC. It is awarded along with "Getting Things Done" XP bonus for completing certain main mission objectives, if player met a certain set of criteria. This page is dedicated to revealing all of this restrictions (including the ones that have no impact on this rating) in addition to other stealth-relevant information.

There are 3 general rules for qualifying for Ghost rating:
 * 1) Do not be seen by humans or bots. This does not include being seen briefly (without radar going red). Radar going Normal→Hostile or Alarmed→Hostile is usually a good indicator that Ghost bonus was ruined — but not always.
 * 2) Do not physically touch an enemy and do not move objects in such a way that enemy may spot you.
 * 3) Do not let an human enemy or a bot see his allies' bodies or bots exploding.

Ghost is worth 500 XP. Receiving the Ghost bonus for a first time will earn the player the Ghost achievement. Smooth Operator is another stealth-related XP bonus in Deus Ex: Human Revolution (with its own set of rules).

AI reactions
This section is dedicated to revealing the enemies' reactions to different player's actions and their effect on Ghost rating.

Notation
All actions listed in the tables below happen consequently from left column to right.


 * Enemy — a human enemy. Since bots (security bots and boxguards) share most of their AI with humans it usually includes them too. Take note that bots reprogrammed to friendly with Robot Domination aug, treat the bodies of their former allies the same way as if they were hostile to the player, meaning that if bot sees a body it will ruin Ghost rating regardless of bot's status. Turrets have very simple AI and do not affect any stealth ratings, so they are not included in this definition and examined separately.
 * Enemy states (as they appear on a radar) and states they transit into:
 * Normal (gray)
 * Suspicious (yellow): applies only to cameras and turrets (when they spot the player briefly). [→Normal]
 * Alarmed (orange): lasts until an enemy investigates the disturbance that caused this state. [→Normal]
 * Long Alert (orange): lasts 80 seconds. [→Normal]
 * Permanent Alert (orange): appears only in scripted situations (Alice Garden Pods, TYM Penthouse, Picus, Rifleman Bank Station levels).
 * Hostile (red) (40 seconds): lasts until the time runs out or until an enemy gets disturbed again. [→Long Alert→Normal]
 * FOV — field of view (vision cone)
 * Investigate — standard action: enemy goes to a place of a disturbance, does a 360 degrees look around, returns to a relaxed state
 * x in "Ghost" column — shows that corresponding action cancels the Ghost bonus

Misconceptions
As this list demonstrates there is a certain flexibility to the definition of "Ghost". Being perfectly stealthy is absolutely not required for Ghost rating. Still, there are some misconceptions regarding certain actions supposedly canceling Ghost, which turn out to be a completely distinct issue or not an issue at all.

For example:
 * Enemy turning hostile: seeing hostile appear on radar is not 100% guarantee for losing Ghost. There is a lot of cases where this does not apply, like when enemy is stunned by a grenade or Icarus stun, or gassed, or is hurt by an explosion. Likewise, in case of enemies seeing bodies no one turns hostile and yet that still affects Ghost.
 * Shooting an enemy without killing: what happens when you shoot an enemy is that 1) he turns hostile (no effect on Ghost) 2) he quickly turns in the direction the damage came from 3) he sees the player — it is the third action that cancels Ghost here. Quickly hiding after shooting will do the trick (but may lead to enemies triggering an alarm as a reaction to gunfire, if there are alarm panels nearby). Also, being cloaked and shooting at enemy while standing in front of him is perfectly fine — you may even see the last known position indicator appear and enemies may open fire on your last known position — and all this still won't cancel the Ghost rating by itself.
 * Reprogrammed turret killing enemies: it is a combination of enemies hearing turret's gunfire, coming to investigate it and seeing the bodies of killed allies that ruins Ghost in this case. As long as turret is used to kill the last standing enemy, or a lone boxguard, for example, Ghost will be fine.

List of objectives in Deus Ex: Human Revolution that award Ghost bonus
There are 29 Ghost bonuses available in the Deus Ex: Human Revolution (30 with additional mission from Explosive Mission Pack DLC).

As the case with Smooth Operator bonus there are some objectives in the game that have two mutually exclusive ways of resolving them, meaning sometimes it's possible to earn either Silver Tongue bonus or Ghost bonus, but not both. To see which way is more profitable XP-wise please consult the Experience by area page.

Abbreviations:
 * GHO — Ghost
 * SIL — Silver Tongue

Sarif Manufacturing Plant

 * M1 - Securing Sarif's manufacturing plant
 * [1] GHO: Enter the main building
 * [2] GHO: Enter the server room
 * M2 - Neutralize the terrorist leader
 * [3] GHO: Confront Zeke Sanders

Detroit Police Station

 * M5 - Investigating the Suicide Terrorist
 * [4] GHO/SIL: Retrieve the dead terrorist's Neural Hub. Ghost and Silver Tongue bonuses for this objective are mutually exclusive.

Derelict Row

 * M5 - Stopping the transmission
 * [5] GHO: Locate and shut down antenna in Derelict Row

Highland Park

 * M10 - Following the clues in Highland Park
 * [6] GHO: Infiltrate the Mercenary Compound
 * [7] GHO: Locate the Mercenary Leader

Hengsha Court Gardens

 * M1 - Hunting the Hacker
 * [8] GHO: Investigate the penthouse apartment

The Hive

 * M1 - Hunting the Hacker
 * [9] GHO/SIL: Find and speak with Tong Si Hung. Note that as in the Police Station, Ghost and Silver Tongue bonuses here are mutually exclusive.

Alice Garden Pods

 * M2 - Gaining access to Tai Yong Medical
 * [10] GHO: Escape the Alice Garden Pods ambush

Tai Yong Medical

 * M1 - Searching for Proof
 * [11] GHO: Enter TYM's tower by passing through the Pangu
 * [12] GHO: Find and view Van Bruggen's recording
 * M2 - Entering the Dragon's Lair
 * [13] GHO: Confront Zhao in the Penthouse
 * [14] GHO: Escape and get to the hangar
 * [15] GHO: Open the hangar bay doors

Picus

 * M1 - Confronting Eliza Cassan
 * [16] GHO: Escape the ambush by reaching the lower floor
 * [17] GHO: Get to the funicular
 * [18] GHO: Summon the funicular
 * [19] GHO: Get inside room 802-11

Detroit - second visit

 * M2 - Finding Isaias Sandoval
 * [20] GHO/SIL: Obtain Sandoval's location from Taggart. There are two ways to handle this objective: either convince Taggart or hack his computer. And though the Smooth Operator bonus can be earned for either of them, the Ghost bonus will be given only for hacking.
 * [21] GHO: Find and confront Sandoval

Hengsha - second visit

 * M2 - Find Vasili Sevchenko's GPL Device
 * [22] GHO: Escape the construction site
 * M3 - You scratch my back, I'll scratch yours (DLC)
 * [23] GHO: Rescue Tong's son
 * M4 - Stowing Away
 * [24] GHO: Retrieve Tong's Package from the Shed
 * [25] GHO: Place the C4 on Administrator Wang's Desk

Omega Ranch

 * M1 - Rescuing Megan and Her team
 * [26] GHO: Search for Signs of Megan's Team
 * [27] GHO: Disable the Signal Jammer
 * [28] GHO: Upload a virus to the security computer and enter the restricted area

Panchaea

 * M1 - Shutting Down Darrow's Signal
 * [29] GHO: Get inside the tower and disengage the lockdown
 * [30] GHO: Reach the Broadcast Center

Bugs
There is a bug present in both console versions and the recent PC builds (1.2.633.0 and 1.3.643.1) of the original game, including The Missing Link (1.0.62.9), where (among other things) some Ghost and Smooth Operator bonuses may not be awarded to certain players when they complete an objective stealthily (see this video for an illustration). The details about causes and occurrences are not clear, but it seems that it has something to do with save game files of former playthroughs. If you're not getting a bonus you think you should get, you're most probably affected by the bug. It is strongly recommended to remove all save game information before starting a new playthrough. For PC users, the files are located at .../Steam/userdata/*UID*/28050/ for the original game and at .../Steam/userdata/*UID*/201280/ for The Missing Link. For affected Console users, creating a new profile for each playthrough seems to be the way to go.