To prevent infiltrators and disruptive player groups from ruining a season's progress in Last Fortress: Underground, alliance leaders must restrict administrative permissions for new arrivals and enforce external background checks before granting power. Your immediate action when receiving new members or merging groups is to place all incoming players into a strict probationary status without management rights.

Identifying Group Infiltration Red Flags

Bad actors typically display specific behavioral patterns during group transfers or server migrations. Watch for these early indicators before handing over leadership roles:

  • Communication Exclusion: Incoming groups refuse to join your primary Discord or central alliance chat hub, preferring private channels to coordinate separately from your leadership team.
  • Rapid Role Requests: New members demand officer titles or kick permissions under the pretext of organizing operations or improving efficiency.
  • Diplomatic Sabotage: Recruits initiate unprovoked aggression against established allies or attempt to rewrite long-standing non-aggression pacts without leader approval.
  • Dividing the Membership: Transfers create an "us versus them" narrative to pit long-term members against management.

Onboarding and Vetting Protocols

Replace open recruitment with a multi-step onboarding workflow to verify that incoming groups do not have a history of seasonal sabotage or broken diplomatic agreements.

  1. Request Server History: Require group leaders to share their previous server number and alliance background before accepting their join requests.
  2. Contact Former Allies: Reach out to diplomatic contacts on their previous server to ask if the migrating group caused diplomatic friction or broke agreements.
  3. Mandate Central Registration: Ensure every member joins your alliance's main communication server before granting any permissions in-game.
  4. Enforce Probationary Access: Keep recruits in basic member tiers where they cannot alter settings, promote players, or kick existing members during events.
Access TierPermissions GrantedRequirements to Unlock
Probationary MemberStandard event participation, base shelter accessMandatory chat registration, background clearance
Verified MemberStandard alliance participation, event participationProven reliability across initial seasonal milestones
Alliance OfficerAdministrative controls, member management, diplomacyDemonstrated loyalty, long-term operational alignment

Responding to Infiltration and Power Shifts

If an integrated group attempts to destabilize your alliance, act immediately to neutralize their authority:

  • Strip Management Access: Revoke officer status and administrative privileges from ringleaders the moment unauthorized actions occur.
  • Remove Disruptive Leaders: Kick individuals who engage in unauthorized warfare against designated allies or actively ignore diplomatic directives.
  • Maintain Operational Transparency: Explain the situation directly to your general membership. Share concrete reasons for the demotions or removals to prevent infiltrators from spreading false narratives or splitting your player base.
Last Fortress: Underground icon

Free Last Fortress: Underground Codes

Current active codes and how to redeem them.

View Codes
Sarah Williams

Sarah Williams

Sarah specializes in RPG and collection games, explaining team building, character growth, and beginner-friendly ways to avoid expensive early mistakes.