Last Fortress: Underground Lineup and APC Placement Guide

To maximize combat efficiency in Last Fortress: Underground, structure your Armored Personnel Carrier (APC) squad with a 2-3 lineup formation. Place two high-durability tanks in the frontline (Slots 1 and 2) to absorb incoming damage, and position three offensive or support heroes in the backline (Slots 3, 4, and 5) to deliver sustained damage from behind protection.

Recommended APC Slot Placement

Fragile damage dealers will fall quickly if assigned to the frontline. Keeping your tanks in front gives backline damage-per-second (DPS) units the time required to cycle through their abilities without being defeated by early focus fire.

Hero Synergy and Skill Triggers

When assembling your team, focus on how hero roles interact rather than relying solely on base power numbers:

• Avoid Over-Supporting: Check hero profile labels. Deploying too many Support or Utility heroes dilutes your offensive power, preventing you from clearing the enemy frontline before your own defense collapses.
• Check Positional Triggers: Read skill descriptions carefully. Some hero abilities trigger or gain increased potency based on placement in the front, middle, or back slot.
• Combine Skill Effects: Pair debuff or damage-over-time (DOT) heroes with damage dealers who receive conditional attack bonuses against affected targets.
• Maintain Faction Bonuses: Grouping heroes from the same faction provides a direct stat boost to your lineup. In early progression, maintaining a faction bonus with a slightly weaker hero is generally more effective than breaking the bonus for a higher-tier hero from a different faction.

Managing APC Capacity and Facilities

Hero abilities rely on underlying troop numbers to exert maximum combat pressure. To ensure your APC operates at full strength:

1. Run Training Facilities Continuously: Ensure your base training structures are always producing soldiers so your APCs remain filled to capacity.
2. Upgrade Base and Research Facilities: Progress your research and upgrade shelter facilities to expand total troop capacity for your squads.
3. Prioritize Manned Squads over Level Alone: A lower-tier hero leading a full, max-capacity soldier squad will outperform a high-level hero leading an under-strength unit. Keep active APCs fully manned before engaging in tough battles.