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The more XCOM performs activities that harass the alien entity, the higher the alien's Aggression will become. Aggression determines which kinds of [[Alien_Missions_(LWR)|missions]] the aliens will run each month, if the aliens should increase their leader levels, and if they aliens should redirect their Harvest missions.
The more XCOM performs activities that harass the alien entity, the higher the alien's Aggression will become. Aggression determines which kinds of [[Alien_Missions_(LWR)|missions]] the aliens will run each month, if the aliens should increase their leader levels, and if they aliens should redirect their Harvest missions.
== Effect of Aggression ==
Aggression is intended to reflect the alien's becoming more aware of XCOM and XCOM becoming more threatening to them.
=== Alien Missions ===
Aggression is used to determine the [[Alien_Missions_(LWR)#Mission_Table|types of missions the aliens will field]].
In general, High Aggression leads to:
<div style="max-width: 350px;">
Triggering an XCOM Base Defense Mission
More Hunt Missions
More Research Missions
More Bombing Missions
More Terror Missions
Less Infiltrations
Less Abductions
Less Harvest Missions
</div>
=== Protecting Harvesters ===
If the aliens are being very aggressive, they will try to move their [[Alien_Missions_(Long_War)#Harvest|Harvest Missions]] that reside in XCOM territory. This will cost them 2% resource each time they do, and they may have to do this multiple times.
<div style="max-width: 300px;">
Relocate chance: Aggression / 2
</div>


==Increasing and Decreasing Aggression==
==Increasing and Decreasing Aggression==


Aggression is a value between 0 and 100% that moves up and down throughout the months.
Aggression is a value between 0 and 100% that moves up and down throughout a campaign.


===Increasing Aggression===
===Increasing Aggression===
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|-
|-
! style="padding: 5px;" | Ship Destroyed or Successfully Assaulted
! style="padding: 5px;" | Ship Destroyed or Successfully Assaulted
! Aggression
! Aggression (chance modified by Campaign Length)
|-  
|-  
|| Scout or Fighter
|| Scout or Fighter
|| 25% chance for +12.5%
|| 50% chance for +12.5%
|-  
|-  
|| Raider or Destroyer
|| Raider or Destroyer
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|-  
|-  
|| Harvester, Terror Ship, Transport, or Abductor
|| Harvester, Terror Ship, Transport, or Abductor
|| +12.5%
|| 50% chance for +25%
|-  
|-  
|| Battleship, Assault Carrier, or Overseer
|| Battleship, Assault Carrier, or Overseer
|| +25%
|| 50% chance for +50%
|}
|}


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The chance of reduction is proportional to how much aggression the aliens have (i.e. 100% aggression decreases twice as fast as 50% aggression).
The chance of reduction is proportional to how much aggression the aliens have (i.e. 100% aggression decreases twice as fast as 50% aggression).
== Effect of Aggression ==
Aggression is intended to reflect the alien's becoming more aware of XCOM and XCOM becoming more threatening to them.
=== Alien Missions ===
Aggression is used to determine the [[Alien_Missions_(LWR)#Mission_Table|types of missions the aliens will field]].
In general, High Aggression leads to:
<div style="max-width: 350px;">
Triggering an XCOM Base Defense Mission
More Hunt Missions
More Research Missions
More Bombing Missions
More Terror Missions
Less Infiltrations
Less Abductions
Less Harvest Missions
</div>
=== Alien Leaders ===
<div style="max-width: 430px;">
'''75% Aggression''': +1 Level to all alien leaders
'''100% Aggression''': +2 Levels to all alien leaders
</div>
=== Protecting Harvesters ===
If the aliens are being very aggressive, they will try to move their [[Alien_Missions_(Long_War)#Harvest|Harvest Missions]] that reside in XCOM territory. This will cost them 2% resource each time they do, and they may have to do this multiple times.
<div style="max-width: 300px;">
Relocate chance: Aggression / 2
</div>


==See also==
==See also==

Latest revision as of 18:04, 9 April 2023

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In General

The more XCOM performs activities that harass the alien entity, the higher the alien's Aggression will become. Aggression determines which kinds of missions the aliens will run each month, if the aliens should increase their leader levels, and if they aliens should redirect their Harvest missions.

Effect of Aggression

Aggression is intended to reflect the alien's becoming more aware of XCOM and XCOM becoming more threatening to them.

Alien Missions

Aggression is used to determine the types of missions the aliens will field.

In general, High Aggression leads to:

Triggering an XCOM Base Defense Mission
More Hunt Missions
More Research Missions
More Bombing Missions
More Terror Missions
Less Infiltrations
Less Abductions
Less Harvest Missions

Protecting Harvesters

If the aliens are being very aggressive, they will try to move their Harvest Missions that reside in XCOM territory. This will cost them 2% resource each time they do, and they may have to do this multiple times.

Relocate chance: Aggression / 2

Increasing and Decreasing Aggression

Aggression is a value between 0 and 100% that moves up and down throughout a campaign.

Increasing Aggression

Aggression is incremented as XCOM destroys or successfully assaults alien UFOs:

Ship Destroyed or Successfully Assaulted Aggression (chance modified by Campaign Length)
Scout or Fighter 50% chance for +12.5%
Raider or Destroyer 50% chance for +12.5%
Harvester, Terror Ship, Transport, or Abductor 50% chance for +25%
Battleship, Assault Carrier, or Overseer 50% chance for +50%

It is also increased when XCOM launches Combat Patrols or successfully raids an Alien Base:

Event Aggression
Combat Patrol +12.5%
Successful Alien Base Assault +100%
Beginning of Month after a Successful Alien Base Assault Set to at least 50%

Decreasing Aggression

Aggression is reduced throughout the game as time passes (checked every 30 minutes) in intervals of 12.5%.

The chance of reduction is proportional to how much aggression the aliens have (i.e. 100% aggression decreases twice as fast as 50% aggression).

See also