What Is the Invading Forces' Seasonal Objective?

The Invading Forces' objective tasks players with Diablo 4 Items 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 cheap D4 materials 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.