Last Z: Survival Shooter UST Guide: Badge Costs and T10 Planning
Updated October 12, 2026
UST Is an Endgame Investment
In Last Z: Survival Shooter, Unit Special Training (UST) is the research route that leads to T10 troops. Completing it requires 1,500,300 badges, making it a major commitment rather than a sensible early research target.
For most players, the better approach is to strengthen the account through other research before funding this branch. Unlocking access does not necessarily mean you are ready to afford the journey.
- Access requirement: Lab Level 30.
- Research scope: 22 nodes containing 246 levels altogether.
- Second-to-last node: Recharge Shield.
- T10 unlock: The final node, Unit Special Training.
- Recommended timing: Late-game progression, once your research foundation is solid.
Badge Budget for Every Node
The figures below represent the badge expense for completing each node's entire level range—not the price of an individual upgrade.
| Research node | Level range | Badges to complete |
|---|---|---|
| Fire Up I | 1–10 | 21,980 |
| Armor Upgrade I | 1–10 | 21,980 |
| Fast Production I | 1–10 | 27,480 |
| Mobility Enhancement I | 1–10 | 36,650 |
| Melee Combat I | 1–10 | 36,650 |
| Weapon Upgrading I | 1–10 | 36,650 |
| Stronger Armor I | 1–10 | 36,650 |
| Shield Upgrade I | 1–10 | 36,650 |
| Camo Coating I | 1–10 | 36,650 |
| Propulsion | 1–10 | 40,310 |
| Fast Production II | 1–10 | 40,310 |
| Fire Up II | 1–10 | 58,620 |
| Armor Upgrade II | 1–10 | 58,620 |
| Demolition Crew | 1–5 | 32,970 |
| Mobility Enhancement II | 1–15 | 117,230 |
| Melee Combat II | 1–15 | 117,230 |
| Weapon Upgrading II | 1–15 | 117,230 |
| Stronger Armor II | 1–15 | 117,230 |
| Shield Upgrade II | 1–15 | 117,230 |
| Camo Coating II | 1–15 | 117,230 |
| Recharge Shield | 1–20 | 219,800 |
| Unit Special Training | 1 | 54,950 |
| Entire branch | 246 levels | 1,500,300 |
The biggest individual expense is Recharge Shield at 219,800 badges. Before reaching it, you must also work through six 15-level nodes that each require 117,230 badges.
That distribution matters: the final unlock's 54,950-badge price tag does not reflect the investment needed to reach it.
Cumulative Milestones on the T10 Route
Use these checkpoints to measure the full budget required from the beginning of the branch.
| Completed milestone | Progress covered | Cumulative badges |
|---|---|---|
| Camo Coating I, level 10 | Opening 9 nodes | 291,340 |
| Demolition Crew, level 5 | Opening 14 nodes | 522,170 |
| Recharge Shield, level 20 | Everything before the final unlock | 1,445,350 |
| Unit Special Training, level 1 | Complete branch; T10 unlocked | 1,500,300 |
By the time Recharge Shield is finished, you have already spent 1,445,350 badges. Budgeting only for the last node therefore overlooks nearly the entire cost of obtaining T10.
When Should You Start Spending on UST?
Treat UST as a deliberate account-development decision, not simply the next available research option. Its steep badge requirements can tie up resources that would otherwise deliver more useful progress elsewhere.
Before committing, review these alternatives:
- Hero Training
- Military Strategies
- Peace Shield
- Field Research
If those branches still offer valuable, affordable upgrades for your account, they will usually deserve attention before UST. The relevant question is not merely whether T10 is desirable, but whether pursuing it now is worth delaying those improvements.
For free-to-play players, rushing this route is generally a poor trade. Less expensive research typically provides better value earlier, while UST works best as a longer-term objective.
Common Planning Questions
Does UST unlock T10 troops?
Yes. T10 becomes available through the concluding Unit Special Training node. Reaching that point requires completing the preceding research path.
What Lab level is needed?
The branch requires Lab Level 30. Meeting that condition grants access; it does not reduce the badge budget.
Is the cost 54,950 or 1,500,300 badges?
Both figures describe different things. 54,950 badges pays for the final node alone, whereas 1,500,300 badges covers the complete branch.
Should you follow these figures if the game shows something different?
Always verify the research screen before spending. If a game update changes prices or access conditions, use the live in-game details when making your decision.
Quick Tips
- Plan around 1,500,300 badges, not just the final unlock's price.
- Reach Lab Level 30 before expecting access to UST.
- Compare unfinished upgrades in other branches before allocating badges here.
- Prepare for the six 117,230-badge nodes in the later stretch.
- Reserve 219,800 badges for Recharge Shield across its 20 levels.
- Pursue T10 when your account can support the commitment, rather than rushing it at the expense of foundational research.
- Confirm current costs in your research screen before purchasing upgrades.