Last Z Field Research Guide — Full Cost Breakdown
Based on video: Field Research Full Guide.
Quick Answer
Field Research total cost: 594,430 badges
- 14 nodes · attack, defense, training speed, troop HP
- First 11 nodes · 182,930 badges
- Last 3 nodes · 411,500 badges (2/3 of total cost)
- Best upgrade · Recharge Shield (+10% troop HP)
Warning: The last 3 nodes cost more than the first 11 combined. Plan your badges carefully — don't get trapped at 70% completion.
After completion: Unlocks Shooter Training, Assaulter Training, and Rider Training trees.
Unlock Requirements
How to Unlock Field Research
If you don't see Field Research in your lab, complete these requirements first:
- New Home — 100% complete
- Elite Troops — 100% complete
- Military Strategies — 40% (unlocks Siege to Seize)
- Siege to Seize — 100% complete
Only after all four requirements are met, Field Research appears in your lab.
All 14 Nodes Explained
Tier 1: Basic Infield Bonuses (20,360 badges)
| Node | Levels | Bonus | Total Cost |
|---|---|---|---|
| Field Training | 1-10 | +20% infield troop attack | 10,180 |
| Camo Coding | 1-10 | +20% infield troop defense | 10,180 |
Cost per level: 380 → 2,200 badges (levels 1-10)
Tier 2: Troop Type Attack (45,810 badges)
| Node | Levels | Bonus | Total Cost |
|---|---|---|---|
| Mobility Enhancement | 1-10 | +20% rider attack | 15,270 |
| Melee Combat | 1-10 | +20% assaulter attack | 15,270 |
| Weapon Upgrading | 1-10 | +20% shooter attack | 15,270 |
Cost per level: 560 → 3,300 badges (levels 1-10)
Tier 3: Training Speed (24,660 badges)
| Node | Levels | Bonus | Total Cost |
|---|---|---|---|
| Rider Training Speed | 1-5 | +10% rider training speed | 8,220 |
| Arms Assembly | 1-5 | +10% assaulter training speed | 8,220 |
| Quick Assembly | 1-5 | +10% shooter training speed | 8,220 |
Cost per level: 750 → 970 → 1,300 → 2,000 → 3,200 badges
Tier 4: Troop Type Defense (92,100 badges)
| Node | Levels | Bonus | Total Cost |
|---|---|---|---|
| Stronger Armor | 1-10 | +20% rider defense | 30,700 |
| Shield Upgrade | 1-10 | +20% assaulter defense | 30,700 |
| Tactical Cover | 1-10 | +20% shooter defense | 30,700 |
Cost per level: 1,100 → 6,700 badges (levels 1-10)
Warning: This is where badge pressure starts. Each defense node costs 30,700 badges.
Tier 5: Final Nodes — The Badge Trap (411,500 badges)
| Node | Levels | Bonus | Total Cost |
|---|---|---|---|
| Field Training II | 1-20 | +40% infield troop attack | 154,600 |
| Camo Coding II | 1-20 | +40% infield troop defense | 154,600 |
| Recharge Shield | 1-10 | +10% troop HP | 102,300 |
Field Training II / Camo Coding II: 1,300 → 20,300 badges (levels 1-20)
Recharge Shield: 3,700 → 22,400 badges (levels 1-10)
The Hidden Badge Trap
Why Most Players Get Surprised
The first 11 nodes cost 182,930 badges. You progress quickly and think Field Research isn't that expensive.
Then you reach the last 3 nodes. They cost 411,500 badges — more than double the first 11 combined.
| Section | Badge Cost | % of Total |
|---|---|---|
| First 11 nodes | 182,930 | 31% |
| Last 3 nodes | 411,500 | 69% |
| Total | 594,430 | 100% |
The trap: At ~70% completion, you feel committed. The game quietly pushes you toward buying more badges. Plan ahead to avoid this.
What Field Research Unlocks
Three New Research Trees
After completing Field Research, three new trees appear in your lab:
- Shooter Training — attack, defense, and stats for shooter troops
- Assaulter Training — attack, defense, and stats for assaulter troops
- Rider Training — attack, defense, and stats for rider troops
These trees significantly increase stats for your main troop type. Focus on the tree matching your faction (Assaulter for Blood Rose, Shooter for Wings of Dawn, Rider for Guard of Order).
Field Research Tips
- Plan for 600k badges — don't start if you can't finish
- Recharge Shield is the best node — +10% troop HP is extremely strong
- Complete on Day 3 — use badge research during Alliance Duel Age of Science day
- Don't rush the last 3 nodes — they cost 2/3 of the entire tree
- Worth it for T10 users — the bonuses greatly improve power and survivability
- Focus your faction's troop type — after completion, prioritize the matching training tree
Frequently Asked Questions
How do I unlock Field Research?
Complete: New Home 100%, Elite Troops 100%, Military Strategies 40% (to unlock Siege to Seize), then Siege to Seize 100%. Only then Field Research appears in your lab.
How many badges does Field Research cost?
594,430 badges total for all 14 nodes. The first 11 nodes cost 182,930 badges, while the last 3 nodes cost 411,500 badges (more than double).
What is Recharge Shield?
Recharge Shield is the final node in Field Research. It increases troop HP by 10% (levels 1-10) and costs 102,300 badges. This is one of the strongest stats in the game.
What does completing Field Research unlock?
Three new research trees: Shooter Training, Assaulter Training, and Rider Training. These significantly boost stats for specific troop types.
Is Field Research worth it?
Yes, especially for T10 troop users. Total bonuses: +60% infield attack, +60% infield defense, +20% attack/defense per troop type, +10% training speed, +10% troop HP.
Why don't I see Field Research in my lab?
You haven't completed the unlock requirements. Check if you have: New Home 100%, Elite Troops 100%, Military Strategies 40%+, and Siege to Seize 100%.
Total Bonuses from Field Research
What You Get for 594,430 Badges
- +60% infield troop attack (20% + 40%)
- +60% infield troop defense (20% + 40%)
- +20% rider attack & defense
- +20% assaulter attack & defense
- +20% shooter attack & defense
- +10% training speed (all troop types)
- +10% troop HP (Recharge Shield)
Game mechanics and numbers may change with updates. This guide was last validated in January 2026.