Last Z Research Costs Atlas — Branch Comparison, Badge Totals, and Unlock Paths

Research Costs • Updated March 15, 2026 • Atlas / directory • Last Z Guides
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Quick Answer

Compare badge totals and unlock requirements for 14 research branches below. Totals cover the full branch, excluding earlier prerequisite research. A useful stopping point can cost less: Hero Training costs 40,040 badges in full, but reaching Cockpit costs 21,930.

All Research Trees

Open any branch below to see its exact node costs, grouped tree view, and the main checkpoint that matters before you commit badges to it.

Hero Training

40,040

Requires: Early combat branch

Cheap early path. Most players stop at Cockpit before moving on.

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Military Strategies

80,116

Requires: 100% Elite Troops

One of the best badge-value branches and the bridge into Peace Shield and Siege to Seize.

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Peace Shield

270,203

Requires: 50% Shelter Building + 45% Mil. Strategies

Core defensive branch with Urgent Rescue and real PvP survivability value.

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Siege to Seize

270,155

Requires: 40% Military Strategies

Aggressive branch that follows survivability planning and leads into Field Research.

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Field Research

600,190

Requires: 100% Siege to Seize

Late branch where the final wall is Recharge Shield and the last nodes dominate the cost.

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Alliance Recognition

360,350

Requires: First Alliance Duel cycle

Event-value branch that matters for Event Expert, Event King, and long-term alliance progression.

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Army Building

750,250

Requires: 100% Peace Shield

Late Peace Shield follow-up that becomes a serious badge wall well before the final node.

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Fully Armed Alliance

500,240

Requires: Late aggressive path

Annihilation and Move Out make this one of the most dramatic late combat badge sinks.

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Unit Special Training

1,500,300

Requires: Lab Level 30

The T10 troop unlock branch, with 1,500,300 badges for full completion.

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Shooter Training

1,440,070

Requires: Lab Level 25 + 100% Field Research

Shooter ATK, DEF and HP, with siege and field troop bonuses.

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Rider Training

1,440,070

Requires: Lab Level 25 + 100% Field Research

Rider ATK, DEF and HP, with siege and field troop bonuses.

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Assaulter Training

1,440,070

Requires: Lab Level 25 + 100% Field Research

Assaulter ATK, DEF and HP, with siege and field troop bonuses.

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Tactical Master

6,000,590

Requires: Lab Level 31

Troop combat bonuses and faction hero ATK/DEF, ending in Crippling Strike and Bulwark.

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Steel Age

1,079,410

Requires: Level 30 Laboratory No 2

Steel Plant, production bonuses, healing, construction and research speed, and reservist capacity.

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How to Use This Atlas

Want a shareable plan instead of a static table? Open the Research Planner to mark completed and planned nodes, compare remaining badges, and copy a URL for your current plan.

Research Costs Atlas FAQ

Which research branch costs the most badges in Last Z?

Tactical Master has the highest full-branch badge total in this atlas: 6,000,590. Unit Special Training costs 1,500,300 badges and owns the T10 troop unlocks.

What unlocks Field Research?

Field Research unlocks after you complete 100% Siege to Seize.

About These Research Totals