Invasion League Guide


Introduction

Invasion has been introduced as a hardcore challenge league alongside Ambush in softcore with the patch 1.1.0 on the March 5th, 2014. Invasion is a rather simple mechanic which adds Invasion Bosses to the Maps. Invasion Bosses have unique and deadly abilities and accompagnied by a pack a monsters. There is a total of 42 different Invasion Bosses, some of them being Vaal Side Areas Bosses as well. The league also featured more variety in monsters encountered in Areas, similar to the Area has increased Monster Variety modifier. Invasion is not properly speaking a core game mechanic but there are still some remnants of it in Path of Exile.

Bladeback Guardian Invasion Boss Showcase

Invasion Bosses

BOSS NAMEMONSTER TYPEATTACKS
Alpha ParadiseChimeralCasts Desecrate
Casts Fire Trap detonation
Devours corpses to regain life
Balus StoneskullBanditUses Heavy Strike
Uses Flicker Strike
Casts Enduring Cry
Casts Immortal Call
Beheader AtaguchuQ'uraUses Cleave applying Corrupted Blood
Uses Cyclone leaving trails of Desecrated Ground
Bladeback GuardianSpikerCasts Incinerate Nova
Casts Ice Spear
Casts Shock Nova
Ice spears on death
Resists Elemental Damage
Resists Chaos Damage
BladetoothHellionCasts Enduring Cry
Casts Immortal Call
Flammability on hit
Drops poison bombs
Fast attacks
Fire damage
Ground fire on death
Resists Elemental Damage
Resists Chaos Damage
Blood MorpherApeCasts Creeping Frost
Casts Ice Spear
Skills have Lesser Multiple Projectiles Support or
Greater Multiple Projectiles Support depending on Level
Allies Move and Attack Faster
Blood StasisApeCasts Flammability
Casts Fireball
Casts Molten Shell
Enemies are Slowed
CorpsestitchNecromancerCasts Cold Snap
Casts Lightning Warp
Casts Desecrate
Casts Summon Skeletons
Casts Flesh Offering
Casts Vulnerability
Raises Undead
Resists Elemental Damage
Resists Chaos
Corrector DraconidesBlackguardUses Leap Slam that leaves burning ground
Uses Fire variant Lightning Strike
Throws Bear Trap
Throws Fire Trap
Resists Elemental Damage
Resists Chaos
Docere IncarnatisExperimenterCasts Proximity Shield
Casts Physical Blast (similar to Undying Evangelist)
Casts Storm Call with Tribal Storm Call Effect
Casts Vaal Storm Call
Quick
Resists Elemental Damage
Resists Chaos
DroolscarGhostCasts Desecrate
Casts Raise Zombie
Casts Detonate Dead
Lightning Damage
Resists Elemental Damage
Resists Chaos
Evocata ApocalypticaBlackguardCasts Spark with Spell Totem Support
Casts Vaal Fireball with Spell Totem Support
Casts Lightning Warp
Casts Firestorm
Casts Ice Nova
Resists Elemental Damage
Resists Chaos Damage
Genesis ParadisaeChimeral
Uses Leap Slam that leaves burning ground
Casts Creeping Frost
Casts Ice Spear
Extra Fire & Cold Damage
Evasive
Resists Cold & Lightning Damage
GhostramBone RhoaUses Rhoa Charge
Uses Rhoa Stomp
GlassmaulSkeletonUses Glacial Hammer
Uses Lightning Strike
Casts Warlord's Mark
Casts Summon Skeletons
with Cast when Damage Taken Support
Allies deal additional Cold damage
Allies deal additional Lightning damage
GranitecrushRock GolemCasts Enduring Cry
Casts Discharge
Quick - Extra Life
Rolls over enemies
Gains Endurance Charges on hit
Gains Frenzy Charges on hit
Gains Power Charges on hit
Resists Elemental Damage
Resists Chaos Damage
GrathColossal BonestalkerCasts Enfeeble
Casts Vulnerability
Casts Summon Skeletons with Spell Totem Support
Allies Move and Attack Faster
Allies Cannot die aura
Resists Cold Damage
GravebloodCannibalCasts Spell Echo Ice Spear
with Lesser Multiple Projectiles Support
Casts Glacial Cascade
Casts Frostbite
Casts Ice Nova (with Arctic Ice Nova Effect)
with Cast when Damage Taken Support
Extra Cold Damage
Resists Elemental Damage
Resists Chaos Damage
Guardian of the MoundGoatman ShamanCasts Vaal Fireball with Spell Totem Support
Casts Storm Call with Tribal Storm Call Effect
Casts Molten Shell
Casts Summon Skeletons with Spell Totem Support
Resists Elemental Damage
Resists Chaos Damage
Harbinger of ElementsSkeletal MageCasts Fire/Cold/Lightning projectiles
Powerful Crits
Allies Move and Attack Faster
Resists Elemental Damage
JikejiTotemCasts Lightning Warp with Spell Totem Support
Casts Spark
Casts Shock Nova
Casts Creeping Frost
Judgement ApparatusConstructCasts Elemental Weakness
Casts Ball Lightning
Extra Fire & Cold Damage
Fast Attacks
Resists Elemental Damage
Resists Chaos Damage
JunglemareApeFrenzies allies
Allies have Energy Shield
(Discipline with Discipline Force Field Effect)
Resists Elemental Damage
Resists Chaos Damage
Kall FoxflyBanditUses Split Arrow
Uses Lightning Arrow
Uses Explosive Arrow
Casts Lightning Warp
Throws Bear Trap
Konu, Maker of WindGoatmanQuick
Fast Attacks
Uses Leap Slam creating Burning Ground
Casts Molten Shell
Resists Elemental Damage
Resists Chaos Damage
MammothcageSkeletal BeastIncreased Life
Life Regen
Allies cannot die
Resist Elemental Damage
Resist Chaos Damage
Mother of the SwarmCarrion QueenSoul Eater
CastsDetonate Dead
Extra Fire Damage
Resists Elemental Damage
Resists Chaos Damage
NighteaterCannibalCasts Temporal Chains
Casts Firestorm
Throws Bear Trap
PewterfangSpiderShroud Walker
Uses Viper Strike
Uses Flicker Strike
Resists Lightning Damage
Resists Cold Damage
RancorMiscreationUses Reave
Uses Flicker Strike
Uses Smoke Mine
Casts Ice Spear
Has Chaos Degeneration aura
Resists Elemental Damage
Resists Chaos Damage
ShivershellShield CrabCasts Frost Wall
Casts Ice Nova
Casts Vaal Detonate Dead on Low Life in second form
Extra Cold Damage
Armoured
Enemies are Slowed
Summons Spitters (in first form)
Resists Elemental Damage
Resists Chaos Damage
SpinesnapMawUses Leap Slam with Multistrike Support and Poison Clouds
Casts Temporal Chains
Quick - Evasive
Powerful crits
Deals Chaos Damage over Time
Resists Elemental Damage
Resists Chaos Damage
StrangledriftWatcherCasts Lightning Warp
Casts Ball Lightning
Resists Elemental Damage
Resists Chaos Damage
TailsingerSnakeUses Puncture
Casts Frost Wall
Throws Poison Bombs
Allies have Energy Shield
Resists Fire Damage
Resists Chaos Damage
The Bolt JugglerUndyingThrows Lightning Trap with Multiple Traps Support
Throws Ice Nova with Trap Support
or Multiple Traps Support
Throws Fire Trap with Multiple Traps Support
Resists Elemental Damage
Resists Chaos Damage
The Book BurnerUndyingCasts Lightning Warp
Casts Tornado with Book Effect
Throws Bear Trap
Far Shot
Resists Elemental Damage
Resists Chaos Damage
The DuchessSea WitchSoul Eater
Casts Raise Zombie
Quick
Resists Elemental Damage
The FirestarterUndyingSoul Eater
Casts Summon Raging Spirit
Throws Fire bombs
The Raging MaskFlame SentinelCasts Flammability
Casts Firestorm
Casts Summon Raging Spirit
Resists Cold Damage
The RevenantVoidbearerCasts Searing Bond
Uses Cyclone
Far Shot
Resists Elemental Damage
Resists Chaos Damage
Wiraq, the ImpalerY'ara'azBerserker
Uses Dual Strike
Resists Elemental Damage
Resists Chaos Damage
WonderwalkerUndyingUses Flicker Strike
Uses Puncture
Casts Discharge
Empowered as kin slain
Gains Power Charges on hit
Resists Lightning Damage
Extra Fire damage

Sources

Invasion is not a mechanic easily accessible in the core game of Path of Exile, since it was never made core game. However it is still a quite common special mod for Flashback Events ran by GGG from time to time. But there are less and less sources allowing players to deterministically access it.

Kirac used to offer Map Missions with "Slay the Invasion Boss" as objective and used to sell Maps with an implicit modifier (Area is inhabited by 5 additional Invasions Bosses) until 3.18. It also used to be accessible with various Prophecies as well as the introduction of Region Atlas Passive Trees in the 3.14 expansion with 2 notables that have both been retired now:

  • Trespassers
    • Areas contain additional Invasion Bosses.
  • Exotic Goods
    • Invasion Bosses in Areas drop 1 additional valuable item. Valuable Items can include stacks of currencies, 6-Linked Items or Gems for instance.


Sextants
There is one Sextant Modifier related to Invasion Bosses:

  • Areas contain an additional Invasion Boss.

Summary

Invasion Bosses are a long forgotten Path of Exile mechanic which has never been really accessible in the core game besides the actual Invasion League and the Legacy League. Currently, running the sextant modifier is the only way to interact with the mechanic.


Credits

Written by Chewingnom.
Reviewed by Grimro.


Changelog

Jul 9th 2022
Article Created.