Aggro, short for aggression, is an invisible statistic that determines the distance at which enemies will begin to attack the player.
All enemies target the player based on criteria set in their AI. Most will constantly try for a target, while others may only target if the player is in water, for example.
Armor and other items that "increase/decrease enemy targeting" cause enemies to consider a player to be closer or farther away than they actually are. Certain accessories, armor, and other sources in the Calamity Mod affect Aggro.
|Rogue stealth||-3 per point of stealth|
|Colossal Squid||-750 (while being eaten)|
|Eclipse Mirror||-700 (also reduces Abyss detection)|
|Abyssal Mirror||-450 (also reduces Abyss detection)|
|Reaver armor||-200 (Reaver Headgear, also reduces Abyss detection)|
|Victide armor||+200 (Victide Helm)|
|Aerospec armor||+300 (Aerospec Helm)|
|Statigel armor||+400 (Statigel Helm)|
|Daedalus armor||+500 (Daedalus Helm)|
|Reaver armor||+600 (Reaver Helm)|
|Hydrothermic armor||+700 (Hydrothermic Helm)|
|Tarragon armor||+800 (Tarragon Helm)|
|Bloodflare armor||+900 (Bloodflare Ram Mask)|
|God Slayer armor||+1000 (God Slayer Horned Greathelm)|
|Elysian Aegis||With guard activated, aggro is quickly increased to a cap of +1,100|
|Asgardian Aegis||With guard activated, aggro is quickly increased to a cap of +1,100|
|Auric Tesla armor||+1,200 (Auric Tesla Royal Helm)|
- Aggro reductions of -750 (or more) nearly guarantee the player will not be targeted.
- Enemies in the Abyss have their own unique detection radius system, independent of Aggro, which can be affected by items such as Anechoic Coating and Abyssal Diving Suit as well as the Luminous Corvina enemy.
- Despite this, being eaten by Colossal Squid decreases Aggro rather than the Abyss creatures' unique detection radii.
|Combat||Damage Reduction • Defense damage • Enchantment • Hit Sounds • Immunity frames • Lifesteal • Minions • Proficiency • Rogue|
|Environment||Biome backgrounds • Events • Music • Status messages|
|Events||Acid Rain • Boss Rush|
|Items||Alternative crafting ingredients • Charge • Consumable • Crafting stations (By Hand) • Drops • Modifiers • Rarity • Recipes • Vanilla item recipes|
|Game||Bestiary • Boss Health Bar • Configuration options • Difficulty Modes (Death Mode • Revengeance Mode) • Fishing • Game controls • Lore • Speedrun Timer • Vanilla changes|
|Player||Adrenaline Meter • Aggro • Buffs and Debuffs • Death prevention • Defense • Rage Meter|