Part of the Events Series:
- Explorer Trail Guide: Structure, stamina, and what it pays out (You Are Here).
- Events Guide Hub: How scoring events work.
- Heroes Guide Hub: Where the fragments this pays out should go.
- Daily Routine Checklist: Fitting Explorer Trail into a ten-minute loop.
Quick Answer
Explorer Trail is a repeatable PvE story mode, unlocked once your HQ reaches level 2 and you build the Hero Precinct.
Structure: 12 trails, each with 12 challenges. 144 in total. Within any trail you can attempt challenges 3, 6, 9 and 12 provided you have Squad Stamina.
Squad Stamina regenerates at 6 per hour, capping at 100.
Rewards: Hero Badges, Skill Books, Hero Fragments (Rare to Epic), Hero Gear Parts, and EXP.
You can run it on auto at 3× speed, which makes it one of the least demanding sources of hero materials in the game.
Overview
Explorer Trail is the game's PvE backbone and the most consistently useful thing a developing account can farm. It costs no troops, it can't be lost to another player, and it pays in exactly the currencies that gate hero progress.
What you'll find is that stamina, not difficulty, is the binding constraint. At 6 per hour capping at 100, you refill fully in about 17 hours from empty. That means an account logging in twice a day is capturing most of the available stamina, and one logging in once a day is spilling some of it.
Here's the thing worth acting on immediately: stamina above the cap is lost. If you're sitting at 100 for hours, that's regeneration you'll never get back.
Unlocking It
Two requirements, both early:
- HQ level 2.
- Build the Hero Precinct, which is the hub for exploration.
That's it. Explorer Trail is available to essentially every account, which is why it's a poor thing to neglect.
The Structure
12 trails, 12 challenges each. Within a trail, the challenges you can actually attempt are 3, 6, 9 and 12, as long as you have the Squad Stamina to spend.
You choose which stage to run based on how far you've progressed, so you're not locked into pushing forward. If a later challenge is beyond your current roster, farming an earlier one you clear reliably is often the better use of stamina.
Gameplay runs as a stage: you gather resources from boxes along the route, fight waves of enemies, then face a final boss. Auto-play and 3× speed are both available, so a run costs you very little attention.
Squad Stamina
Worth separating from Chief Stamina, which is what Infected Fiend rallies draw on. The two budgets are distinct and do not compete.
The whole economy of the mode.
| Property | Value |
|---|---|
| Regeneration | 6 per hour |
| Cap | 100 |
| Full refill from empty | ~17 hours |
Practical consequences:
Don't sit at cap. Every hour spent full wastes 6 stamina. Two logins a day roughly avoids this; one login a day doesn't quite.
Spend before long absences. Emptying your stamina before bed means the overnight regeneration all lands inside the cap.
Stamina is the limit, not skill. You will run out of stamina long before you run out of challenges, so the question is always where to spend it rather than whether you can clear something.
[!TIP] Fold this into your daily routine right after sending gathering marches. Burn stamina down, set auto, let it run at 3× while you do everything else.
What It Pays Out
| Reward | Why it matters |
|---|---|
| Hero Fragments (Rare to Epic) | The bottleneck on hero progress |
| Hero Badges | Classic hero rank upgrades alongside fragments |
| Skill Books | Hero skill upgrades |
| Hero Gear Parts | Hero equipment progression |
| EXP | General progression |
Fragments are the headline. Hero progress is fragment-gated more than anything else, and Explorer Trail is a steady, free, no-risk source of them.
The Rare-to-Epic range is worth noting: this feeds your Epic heroes rather than your legendaries. That's genuinely useful for a free account, where cheap Epic heroes like Sarge do real work. See the tier list.
How to Farm It Well
- Clear forward until you hit a wall you can't beat reliably.
- Then farm the highest challenge you clear consistently. Failed attempts still cost stamina.
- Run on auto at 3×. There's no meaningful skill expression to preserve.
- Spend stamina down before long absences so regeneration doesn't overflow.
- Push forward again whenever your hero roster improves.
The mistake is grinding a stage far below your capability out of habit, or repeatedly failing one above it. Both waste the only resource that matters here.
F2P vs Spender
F2P accounts should treat Explorer Trail as core daily business, alongside intel missions. It's free hero materials with no troop risk, which is exactly the shape of resource a free account is short of.
Spending accounts benefit less proportionally, since they have other fragment routes, but the stamina is free either way and skipping it is leaving materials on the table.
Common Mistakes
Sitting at the 100 cap. Regeneration above the cap is lost. Fix: spend down, especially before sleeping.
Repeatedly failing a stage above your level. Failed runs still cost stamina. Fix: farm the highest one you clear reliably.
Grinding far below your capability. Lower rewards for the same stamina. Fix: push forward when your roster improves.
Not building the Hero Precinct early. It unlocks at HQ 2 and gates the whole mode. Fix: build it as soon as it's available.
Playing it manually. No benefit. Fix: auto and 3×.
For Completion Chips and related rewards, inspect the specifically named Hero Challenges and Story Missions in the Precinct. Their reward tracks are separate from simply repeating an ordinary Explorer stage.
Hero Skills for a Specific Obstacle
Use Maddie & Frank's Pipe Bomb and companion skills when evaluating control and squad pressure, or Lucky's Teddy skills when building around a summon. The Travis guide covers traps and his separate farming role. If entry is blocked by energy, check Squad versus Chief Stamina before opening refill items.
FAQ
How do I unlock Explorer Trail in State of Survival? Reach HQ level 2 and build the Hero Precinct.
How many stages are in Explorer Trail? 12 trails with 12 challenges each. Within a trail you attempt challenges 3, 6, 9 and 12.
How does Squad Stamina work? It regenerates at 6 per hour and caps at 100, so a full refill from empty takes about 17 hours.
What rewards does Explorer Trail give? Hero Fragments (Rare to Epic), Hero Badges, Skill Books, Hero Gear Parts and EXP.
Can I auto Explorer Trail? Yes, with 3× speed. There's no reason to play it manually.
Should I push forward or farm an earlier stage? Farm the highest challenge you clear consistently. Failed attempts waste stamina, and pushing a wall repeatedly costs more than it returns.
How do I get more exploration chances? Stamina regeneration is the main route, so the practical answer is to spend it down regularly rather than letting it sit at cap.
Key Takeaways
- Unlocks at HQ 2 with the Hero Precinct built. Nearly every account can run it.
- 12 trails × 12 challenges; attemptable stages within a trail are 3, 6, 9 and 12.
- Squad Stamina: 6 per hour, cap 100. Roughly 17 hours to refill from empty.
- Don't sit at cap — overflow regeneration is lost. Spend down before sleeping.
- Pays Hero Fragments (Rare to Epic), Badges, Skill Books, Gear Parts and EXP.
- Farm the highest stage you clear reliably. Failed attempts still cost stamina.
- Run it on auto at 3× and fold it into your daily loop.