Diablo 4 Season 11: How to Complete the Invading Forces Objective Easily

Dec-17-2025 PST

Diablo 4 Season 11 introduces a wide range of seasonal objectives designed to push players into new activities and endgame content. While many of these challenges can be completed naturally through gameplay, some stand out as unnecessarily frustrating. One of the most common pain points for players this season is the Invading Forces objective.

 

Fortunately, there is a fast, reliable method to complete Invading Forces with minimal effort. If you're struggling to finish this objective in Diablo 4 Season 11, this guide will show you exactly where to go, how to farm efficiently, and how to complete it in a fraction of the time.

 

What Is the Invading Forces' Seasonal Objective?

 

The Invading Forces' objective tasks players with defeating enemies that possess one of the following special affixes:

 

·Infested

·Illusory

·Anguished Souls

·Sinful Torment

 

To complete the objective, you must defeat 200 total enemies with these affixes while playing on Hard difficulty or higher.

 

While these enemies technically appear in multiple types of content, their spawn rate is inconsistent. Many players report going long stretches without encountering more than a handful at a time, making traditional farming methods inefficient.

 

The Best Way to Complete Invading Forces in Diablo 4 Season 11

 

The fastest and easiest method to complete Invading Forces is by farming The Undercity in a party.

 

This approach is highly effective due to three key factors:

 

1. Enemy Density

2. Affix Spawn Rate

3. Shared Kill Credit in Groups

 

Why The Undercity Works So Well

 

The Undercity features massive clusters of enemies packed into tight spaces, many of which frequently roll the required Invading Forces affixes. Instead of hunting for isolated spawns in open-world content, you're constantly surrounded by eligible enemies.

 

In practical testing, this method dramatically accelerates progress. In a single Undercity run, it's possible to gain dozens of kills toward the objective. Players regularly report jumping from single-digit progress to over 50 kills in just a few runs.

 

Because Undercity runs are short and repeatable, you can chain them back-to-back until the objective is complete.

 

Play in a Party for Maximum Efficiency

 

While you can complete Invading Forces solo, forming a party makes the process significantly faster.

 

Benefits of Group Play

 

·Faster clears due to combined damage

·More enemies defeated per minute

·Kill credit counts as long as you're nearby

·Easier survivability of greater difficulties

 

Even if your party rushes through content aggressively, the kill credit still applies as long as you're in range. This means support builds and lower-geared characters can still progress efficiently.

 

Finding a group is usually easy, even during off-hours. Alternatively, you can create your own party and invite others who are also working on seasonal objectives.

 

Additional Benefits of Undercity Farming

 

Completing Invading Forces in the Undercity offers several side benefits that make this method even more appealing:

 

Seasonal Reputation Progress

 

Repeated Undercity runs contribute toward seasonal reputation gains, helping you unlock rewards faster.

 

Divine Gift Progression

 

If you're working on leveling Andariel's Divine Gift, repeated clears naturally contribute to its progression.

 

Experience and Loot

 

The Undercity remains one of the most efficient sources of experience, gear upgrades, and crafting components. Instead of farming a disconnected objective, you're actively improving your character and building a stronger inventory of Diablo 4 Items.

 

This efficiency is especially valuable for players trying to minimize grind or avoid relying on external shortcuts like choosing to buy Diablo IV Items instead of farming.

 

Difficulty Requirements and Setup Tips

 

The Invading Forces objective only requires Hard difficulty or higher, so there's no need to push into higher torment tiers unless you want better loot.

 

Recommended Setup

 

·Play on Hard difficulty for speed and safety

·Focus on AoE-heavy builds for faster clears

·Stay close to your party during combat

·Don't rush exits until enemies are cleared nearby

 

Speed is more important than survivability here, so optimizing for movement and area damage is ideal.

 

How Long Does It Take to Finish?

 

Using the Undercity group farming method, most players can complete the Invading Forces objective in under an hour, often much faster with an efficient group.

 

Compared to open-world roaming or random dungeon farming-which can take this method is dramatically more efficient and far less frustrating.

 

Final Thoughts

 

The Invading Forces seasonal objective in Diablo 4 Season 11 may seem tedious at first, but it becomes trivial once you know where to farm. By running The Undercity in a party, you can rapidly stack kills, earn seasonal progression, and move on to more enjoyable content.

 

If you're stuck hunting down Infested, Illusory, Anguished Souls, or Sinful Torment enemies elsewhere, stop wasting time. Head into the Undercity, group up, and knock out Invading Forces quickly and painlessly.