- The Trench Decay map is a layered trench frontline split into defensive sectors and no-man's-land zones.
- Gas pushes shrink the playable area on a timer, so route planning matters more than raw aim.
- Trench elbows and chokepoints are the strongest defensive positions on every sector.
- Extraction zones require a brief hold, so arrive as a squad with escape barricades pre-built.
- Every successful extraction feeds the server-wide LIVE WAR map progress.
Trench Decay Map Overview
The Trench Decay map is built like a real WW1 frontline: a series of parallel trench lines connected by communication trenches, with deadly open ground between them and loot-rich supply positions scattered across the sector. Understanding how the map flows — from your spawn trench, through the forward line, across no-man's-land, to the extraction corridor — is the single biggest factor separating squads that extract from squads that wipe.
Video Highlights:
- Official trailer showing the trench frontline atmosphere and map scale
- Visual look at gas effects, squad movement, and extraction moments
- Confirms the dark, claustrophobic map tone that drives route discipline
The map is organized around three functional zones, each demanding different behavior:
Rear Trenches
- Safest zone, last to be hit by gas
- Ammo crates and dugouts for resupply
- Ideal medic and support positions
Forward Line
- Primary combat sector with barricade funnels
- Highest enemy wave pressure
- Best loot-to-risk ratio mid-run
No Man's Land
- Open ground with flanking side trenches
- Directional gas drifts across it
- Contains high-value salvage and the extraction approach
| Map Zone | Threat Level | Gas Exposure | Loot Quality | Primary Use |
|---|---|---|---|---|
| Rear trenches | Low | Last hit | Moderate | Resupply, revives, fallback |
| Forward line | High | Periodic pushes | High | Main wave defense |
| Communication trenches | Medium | Medium | Moderate | Rotation between lines |
| No man's land | Very high | Directional drift | Very high | Salvage and flanking |
| Extraction corridor | Escalating | Rapid timers | N/A | Final hold and exit |
The DUAL update reworked trench lines with new cover, sightlines, and extraction routes. Routes memorized before DUAL may no longer be safe — walk the map on a lower difficulty before committing to a loot route.
Gas Zones and the Shrinking Map
Gas is the clock of every Trench Decay run. It advances in timed surges from the enemy side, progressively shrinking the playable sector. Late in a run, the map contracts to a final defensible pocket, and any position outside it becomes unlivable.
| Gas Behavior | What Happens | Counterplay |
|---|---|---|
| Timed surges | Gas advances in pulses with warning windows | Retreat as the surge starts, not before or after |
| Directional drift | Gas moves with wind across no-man's-land | Watch wind indicators before crossing open ground |
| Post-assault surge | Gas follows every failed enemy push | Expect a surge after each big wave and pre-position |
| Final advance | Map shrinks to a last pocket | Stack ammo crates and hold overlapping fire lanes |
Each sector has dugouts and bunkers that stay out of the gas longest. Learn them in low-risk runs so late-campaign retreats become muscle memory instead of guesswork.
Key gas positioning rules:
- Never be more than one trench away from a safe exit line at any time.
- Medic and support classes should stay one trench behind the front so they can retreat with the squad.
- Wire the flank routes through side trenches — flanking raiders and gas both use predictable corridors.
Defensive Positions and Chokepoints
The strongest positions on the map are trench elbows — corner junctions that give you cover on two sides with a single approach to watch. Set LMGs and Engineers at elbows and let enemies funnel into concentrated fire.
| Position Type | Best Classes | Effectiveness | Notes |
|---|---|---|---|
| Trench elbow | Support, Engineer | ★★★★★ | Two-sided cover, single approach |
| Barricade funnel | Rifleman, Support | ★★★★ | Pre-build between waves |
| Strongpoint choke | Support, Engineer | ★★★★★ | Concentrate heavy firepower |
| Open ground | Scout | ★★ | Only with wire and sandbag cover |
| Rear dugout | Medic | ★★★★ | Safe revive position |
Assign each player a firing lane (left trench, center, right flank) rather than a fixed spot. Lanes keep coverage intact when someone has to fall back, revive, or resupply.
Loot and Extraction Route Walkthrough
A reliable run follows a repeatable route through the map. Follow this sequence to balance loot gain against gas and wave pressure:
Deploy into the rear trench
Start at the spawn trench, grab starting ammo, and confirm squad lanes and the extraction direction before moving.
Push the forward line
Move up through communication trenches as a squad, looting crates and supply dumps on the way. Prioritize high-value salvage over bulk low-tier loot.
Salvage no man's land selectively
Cross open ground only after checking wind indicators. Hit the highest-value positions near the flank trenches, then pull back before the next gas surge.
Fall back tier by tier
Retreat one trench at a time as gas pushes. Repair barricades between waves and keep the extraction corridor barricaded from the start.
Hold and extract
Arrive at the extraction zone as a squad, set up facing enemy spawn funnels, and defend the hold until the timer completes. Never sprint in solo.
A successful extraction converts your salvage into war contribution, crediting both your personal record and the server-wide LIVE WAR map. Sustained contribution across runs matters more than a single big haul.
Map Readiness Checklist
Before your next deployment, run through this list to make sure your map knowledge is deployment-ready:
Map Readiness Before Deployment:
- Walk the post-DUAL map once on low difficulty
- Memorize two safe dugouts per sector
- Identify the trench elbow you will defend
- Confirm the extraction corridor and barricade plan
- Assign firing lanes to every squad member
Trench Decay Map FAQ
Q: Did the Trench Decay map change in the DUAL update?
Yes. The DUAL update reworked existing trench lines and surrounding areas with new cover, sightlines, and extraction routes. Re-walk the map on lower difficulty before running serious loot routes.
Q: Where is the safest place on the map during a gas push?
Rear trenches and dugouts stay out of the gas longest. Learn the safe pockets in each sector during low-risk runs so retreats are automatic under pressure.
Q: How does the gas shrink the Trench Decay map?
Gas advances in timed surges, sometimes drifting directionally across no-man's-land. Each surge shrinks the playable sector, and the final advance reduces the map to a last defensible pocket.
Q: How does the map connect to the LIVE WAR system?
Every successful extraction converts your salvage into war contribution, which pushes the shared LIVE WAR map forward for the whole server and fills community reward tiers.