How to Prepare for Day 20 and the Atlanta Horde Siege

This isn't a repeat of the Overview page -- it's a practical look at pacing your campaign around the confirmed Day 20 siege deadline, based on official materials and community wikis since the July 14 1.0 launch.

Day 20 Is a Real Deadline, Not a Suggestion

Since the Atlanta Horde's final siege is confirmed to arrive on in-game Day 20, treat your early and mid-game decisions as genuine preparation for a fixed event, not open-ended survival. Prioritize shelter defenses, weapon and armor repairs, and squad readiness with that specific date in mind rather than assuming you can indefinitely delay hard choices.

Faction Choice Shapes Your Whole Campaign

Since your alliance with the National Guard, Church of Second Chance, or Shady Lady genuinely determines which high-tier recruits and equipment become available, research each faction's general leanings early rather than picking based on first impressions alone -- this choice ripples through your entire run.

Let the Learn-by-Doing System Guide Your Squad Roles

Since survivors naturally improve in whichever skills they actually use during combat, deliberately rotate roles and tactics across your squad early on rather than always defaulting to the same approach -- this builds a more versatile militia ahead of the Day 20 siege than narrowly specializing everyone from the start.

Balance Loud and Quiet Approaches

Since gunfire genuinely attracts unwanted attention, don't default to firearms for every encounter -- melee weapons and stealth takedowns are confirmed as real tactical options specifically for situations where staying quiet matters more than raw damage.

Starting Fresh vs. Continuing an EA Save

If you're returning from Early Access, weigh the developers' own recommendation carefully -- while your old save technically still works and can reach the completed ending, starting fresh avoids the compatibility issues they've specifically warned about.

See the full data: Urban Strife Getting Started