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Extermination

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Revision as of 00:55, 9 September 2026 by Dejey (talk | contribs) (Created page with "<div class="assault-sp"> {{Assault Mission | part = header | name = Extermination | area = Ilrusi Atoll | rank = SP | recommended level = 70 | base points = 1100 | objective = Exterminate all monsters | mission map = Map 7 | mission orders = The vermin feasting on the corpses left behind by the Lamiae have multiplied to unnatural numbers. Destroy this threat to the surrounding ecology. }} == Walkthrough == # Enter the assault area on Map 7. # Defe...")
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Extermination
Assault Area Ilrusi Atoll Mercenary Rank Superior Private (SP)
Mission Giver Bhoy Yhupplo, L-9 Staging Point Ilrusi Atoll Staging Point, G-5
Recommended Level 70 Party Size 3-6
Time Limit 30 minutes Base Reward 1,100 Assault Points
Objective Exterminate all monsters Map Map 7


Mission Orders

The vermin feasting on the corpses left behind by the Lamiae have multiplied to unnatural numbers. Destroy this threat to the surrounding ecology.

Entry

  1. Speak with Rytaal in the Commissions Agency to receive an Imperial Army I.D. Tag.
  2. Speak with Bhoy Yhupplo at L-9 and select Extermination.
  3. The Imperial Army I.D. Tag is exchanged for Ilrusi Assault orders, and the temporary Map of Ilrusi Atoll is issued.
  4. Travel to the Ilrusi Atoll Staging Point at G-5.
  5. One party member must obtain an Assault Armband from Meyaada at G-5.
  6. Examine the Runic Seal to enter the Assault.
  7. Each participant receives Reef Fireflies upon entering.

Walkthrough

  1. Enter the assault area on Map 7.
  2. Defeat the 20 Carrion monsters spread throughout the area:
  3. Under current LandSandBoat behavior, defeating a Carrion monster may cause an Undead version of that monster family to appear.
  4. Continue until the mission objective is completed.
  5. The Ancient Lockbox and Rune of Release become available near the starting area at approximately H-8.
  6. Open the Ancient Lockbox and distribute any treasure before using the Rune of Release.
  7. Examine the Rune of Release to complete the assault and receive Assault Points.

Mission Mechanics

Under the current LandSandBoat implementation, Extermination begins with 20 Carrion monsters and completes when the instance reaches 20 points of mission progress.

Mechanic Current LandSandBoat behavior
Carrion monsters 20 are present at the start of the assault.
Undead spawn check Each Carrion monster has a 1-in-5 chance on defeat to spawn the corresponding Undead monster, provided that family's Undead monster has not already appeared.
Undead limit A maximum of one Undead monster from each family can appear: Crab, Leech, Slime, and Toad.
Mission progress A Carrion monster normally awards 1 point of mission progress when defeated.
Successful Undead spawn If a Carrion monster instead triggers its family's Undead spawn, that Carrion monster does not immediately award its progress point. Defeating the spawned Undead monster awards that point instead.
Completion The mission is completed at 20 points of progress.
  • As a result, a run requires defeating the 20 original Carrion monsters plus any Undead monsters that spawn, for a maximum of 24 total kills.
  • This differs from older original-era descriptions that report a single Undead monster appearing during the mission. HorizonXI-specific behavior should be verified when possible.

Enemies

Enemy Level Initial Count Notes
Carrion Crab 77-78 7 Each defeat can trigger Undead Crab until one has spawned.
Carrion Leech 77-78 8 Each defeat can trigger Undead Leech until one has spawned.
Carrion Slime 77-78 3 Each defeat can trigger Undead Slime until one has spawned.
Carrion Toad 77-78 2 Each defeat can trigger Undead Toad until one has spawned.
Undead Crab 79-80 0-1 May appear after defeating a Carrion Crab. Required if spawned.
Undead Leech 79-80 0-1 May appear after defeating a Carrion Leech. Required if spawned.
Undead Slime 79-80 0-1 May appear after defeating a Carrion Slime. Required if spawned.
Undead Toad 79-80 0-1 May appear after defeating a Carrion Toad. Required if spawned.

Strategy

  • The mission is primarily a search-and-destroy assault. Splitting up to cover separate branches of the map can reduce time spent backtracking.
  • Wide Scan can help locate remaining Carrion monsters.
  • After defeating a Carrion monster, confirm whether an Undead monster appears before moving too far away.
  • The Carrion Leeches are the most numerous enemy type, with eight spread throughout the assault area.
  • Keep track of which Undead families have already appeared. Under current LandSandBoat behavior, the same Undead family cannot spawn a second time.
  • Leave enough time to return to the Ancient Lockbox and Rune of Release after completing the objective.
  • Open the Ancient Lockbox before using the Rune of Release.

Assault Points

Party Size Base Assault Points
1-3 1,100
4 990
5 880
6 770

Additional point modifiers:

  • Each party member beyond the third reduces the base reward by 10%.
  • The holder of the Assault Armband receives a 10% mission-leader bonus.
  • A player's first successful completion receives a 50% first-clear bonus.
  • Assault Point bonuses are multiplicative.
  • A failed Assault may award 100 consolation points.

Ancient Lockbox

After completing the objective, the Ancient Lockbox becomes available near the Rune of Release.

Current LandSandBoat appraisal data defines the following results for items originating from Extermination. The percentages below are the conditional appraisal rates after the corresponding ??? item has been obtained. They are not the Ancient Lockbox's chance of awarding that ??? category.

??? Polearm

Appraisal Rate
Spark Spear 20%
Willow Wand +1 20%
Holly Staff +1 15%
Brass Zaghnal 35%
Volunteer's Scythe 10%

??? Axe

Appraisal Rate
Pickaxe 100%

??? Footwear

Appraisal Rate
Storm Crackows 5%
Ash Clogs 35%
Bronze Leggings +1 25%
Leather Highboots 35%

??? Box

Appraisal Rate
Rusty Bucket 15%
Little Worm 25%
Distilled Water 25%
Lamian Armlet 10%
King Truffle 5%
Qutrub Gorget 5%
Silver Quiver 2%
Sleep Quiver 2%
Stone Quiver 4%
Bone Quiver 3%
Beetle Quiver 4%

Other Reported Rewards

The following items are associated with Extermination in original-era documentation, but their availability and drop rates on HorizonXI require verification:

Related Pages
Assault Access and NPCs Mission Objects and Rewards