⚠️ A note before you start: This guide was written from the perspective of a level 30 player with T10 troops. If you aren't there yet, adjust as necessary — for example, you may not be strong enough to defeat the armed guards at a Lv. 3 Oilfield. Don't let that scare you off: two recent players in exactly that situation followed the rest of the strategy as laid out and still took 1st and 2nd in their respective arenas.
01. The Two-Tiered Reward System
Oilfield Strike uses a "two-tiered" rewards system as follows.
A. Collection Milestones (Fixed Loot)
Based on total oil collected in the round. These do NOT depend on rank — hit the threshold, get the bundle.
| Threshold | Key Rewards |
|---|---|
| 10,000 oil | Training Speedups + Resource Chests (small bundle) |
| 25,000 oil | Same tier |
| 40,000 oil | Same tier |
| 75,000 oil | Upgraded bundle — adds Badge Blanks ×10 |
| 100,000 oil | Same upgraded tier |
| 150,000 oil | Final milestone — same as 75K tier |
Aim for at least 75,000 every battle to hit the Badge Blank tier.
B. Final Collection Rank (Top 500)
Ranked by total oil collected across the entire battle. This is the big one — Diamonds are the headline reward.
| Rank | Diamonds | Other Notable Rewards |
|---|---|---|
| 1 | 4,000 | 14-Day Skin + 80 Badge Warrants + 50 Badge Blanks |
| 2–3 | 3,600–3,800 | Skin + Warrants + Blanks |
| 4–10 | 3,000–3,400 | Warrants + Blanks (no skin past rank 5) |
| 11–50 | 2,000–2,500 | Warrants + Blanks + Chests |
| 51–200 | 800–1,200 | Warrants + Blanks + Chests |
| 201–500 | 600 | Warrants + Blanks + Chests |
02. Battle Timeline
The battle is exactly 30 minutes. Here are the key moments you need to know:
Battle Starts
TP into center, deploy squads to Lv. 3 oilfields, send a squad to hunt patrols for tech XP.
"Hidden Oilfields in 60s" Warning
This is your recall cue. Start pulling squads off regular oilfields to prepare for hidden spawns.
Phase 1 Hidden Oilfields Spawn
Hidden fields appear and stay on the map for 5 minutes (until 15:00). Race to drain them — 200 oil/sec, full drain in 20 seconds.
"Phase 2 Hidden Oilfields in 60s" Warning
Second recall cue. Prepare for Phase 2 hiddens at 20:00.
Phase 2 Hidden Oilfields Spawn
Same as Phase 1. Stay for 5 minutes (until 25:00).
Refinery Opens (7 Minutes)
The highest oil-per-second instrument in the event. Even rank 10 pays 20K oil. Always attempt this.
Battle Ends
All oil in transit (being mined or marching home) counts toward your final score. Settlement mail at 30:10.
03. Map & Zones
The map is a 240×240 grid divided into three concentric zones. Higher-level oilfields and stronger patrols concentrate toward the center.
| Zone | Area | Oilfields | Max Fields | Patrol Mix |
|---|---|---|---|---|
| Zone 1 — Outer Ring | Full 240×240 | Lv. 1 | 300 | 80% weak / 20% strong |
| Zone 2 — Inner Ring | 150×150 | Lv. 2 | 100 | 50% / 50% |
| Zone 3 — Center | 60×60 | Lv. 3 | 30 | 20% weak / 80% strong |
The Lv. 3 hunting ground is just 6.25% of the total map area with at most 30 fields scattered across it. TP into the center and you're never more than ~60 grid squares from the next Lv. 3. This is why "TP near a Lv. 3 cluster" is the universal opening move.
04. Oilfield Economics
| Field Type | Oil Reserves | Collection Speed | Drain Time | Guard Power |
|---|---|---|---|---|
| Lv. 1 Oilfield | 8,640 | 8/sec | 18:00 | 682K |
| Lv. 2 Oilfield | 17,280 | 16/sec | 18:00 | 1.95M |
| Lv. 3 Oilfield | 34,560 | 32/sec | 18:00 | 18.8M |
| Hidden Oilfield | 4,000 | 200/sec | 0:20 | None |
All Three Grades Drain in the Same Time
All normal oilfields drain in exactly 18 minutes at base speed. Volume scales proportionally with speed. Picking Lv. 3 isn't about "more oil per second" in isolation — it's about fewer captures needed. Less time spent marching and redeploying means more time collecting.
06. The Tech Tree
Tech XP ("Battlefield Experience") is earned by killing Armed Patrols — the wandering monsters, NOT oilfield guards. Weak patrols give 75 XP, strong patrols give 150 XP. You need 5,400 XP total to unlock the full tree (about 36 strong kills or 72 weak kills).
You pick one choice per tier — the other locks for that round. Decide your picks before the battle starts: every minute a skill sits unpicked is value lost.
Tier 1 (200 XP)
+1,080 oil/min passively for the rest of the battle.
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+1,500 oil per Armed Patrol kill.
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Tier 2 (500 XP)
+12,000 troop capacity per squad. More troops on a field = faster gather rate per deploy.
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+25% in-event march speed.
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Tier 3 (900 XP)
+5,000 oil on a successful oilfield capture (60-second cooldown shared across all captures).
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+5,000 oil on a failed occupation attempt (60-second cooldown).
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Tier 4 (1,500 XP)
+15% gather speed on all occupied fields, passive.
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−30% hero recovery time (5 min → 3.5 min) after a hero is defeated in battle.
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Tier 5 (2,300 XP)
+66% Penetration for 60 seconds (5-minute cooldown).
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+50% gather speed for 60 seconds (5-minute cooldown).
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Meta Strategy — Members Only
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Important: Your usual outside-the-event march speed and gather speed buffs (from alliance tech, VIP, etc.) do NOT work inside Oilfield Strike. Only the in-event Strike Skills affect march and collection speed. This is why Tier 4 and Tier 5 choices are disproportionately valuable.
07. The Refinery
Refinery Occupation Rank Rewards
Ranked by cumulative seconds occupying the Refinery (opens at 23:00, runs 7 minutes). You only need 1 second to qualify.
Tracking is cumulative, not longest streak. Multiple short occupations add up. Even rank 10 (20K oil) dumps into your collection total — it can push you past a milestone threshold.
Don't skip this even if you're outclassed. Even rank 10 (20K oil for 5–10 seconds of presence) returns 5×–10× more oil per second than your best alternative. The refinery is the most efficient oil source in the entire event when you can sneak in. Players have finished 5th in the rankings with only 4 seconds in the Refinery — and won events with 0 refinery time while the 2nd place finisher held it for the entire 7 minutes (earning them 100k oil).
How Occupation Works
- ▸ Tracking is cumulative seconds, not longest streak
- ▸ Multiple short occupations add up
- ▸ Only 1 squad per player allowed at/sent to the refinery
- ▸ Refinery oil counts toward your collection total
The Typical Refinery Scenario
- ★ 1–2 whale players fight over ranks 1–3
- ★ Ranks 4–10 are usually decided by whoever bothers to show up
- ★ 60 seconds total → rank 4–8 = 30K–55K oil
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08. Teleporter Strategy
The Basics
- ▸ 6-minute cooldown between free teleports
- ▸ In a 30-minute battle, you get 5 free TPs (at 0:00, 6:00, 12:00, 18:00, 24:00)
- ▸ Paid TPs during cooldown cost escalating Advanced Teleporters: 1, 2, 3, 4, 5 (up to 15 total per window)
- ▸ Paid charge count resets when cooldown expires
Most Players Only Use 1–2 Free TPs
Each unused free TP is a missed redeploy opportunity worth potentially tens of thousands of oil. A fresh Lv. 3 cluster after a TP beats sitting idle on a drained field. Never let a free TP sit unused.
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09. Combat & Hero Recovery
💚 Officers Are Unlimited & Can't Die
Your officers are unlimited in number and cannot die during Oilfield Strike. Their levels sync to your highest-trained officers outside the event. You can always deploy a full squad. Don't conserve officers — there's no cost.
⏱️ Hero Recovery: 5 Minutes
The only cost of losing a fight is your heroes go into 5-minute recovery (3.5 min with Tier 4 Hero Recovery tech). Each hero recovers independently. Losing 2+ battles in quick succession can cripple your combat ability for several minutes.
What Buffs Work Inside Oilfield Strike
| Buff Source | Combat Power | March Speed | Collection Speed |
|---|---|---|---|
| Alliance Tech / Personal Tech / VIP / Skins | ✓ | ✗ | ✗ |
| Strike Skills (in-event tech tree) | ✓ | ✓ | ✓ |
Your normal march speed and gathering speed buffs are completely disabled. The Strike Skills tree is your only lever for march and collection speed.
PvP rules: You can attack oilfields occupied by other players — including your own alliance members. You cannot attack anyone's PD/castle. Same-alliance theft is fair game, so communicate with your alliance.
10. The Extra Drop Mechanic
The most easily-missed mechanic in the event: If a squad that has been collecting on an oilfield is defeated, a portion of its collected oil drops as scattered pickups on the ground — ANYONE can grab these drops.
🛡️ Protect Yourself
The longer your squad has been gathering on a field, the juicier a target you become. If an attacker is incoming and you can't win the fight, recall before they arrive — oil is kept on recall, and you avoid both the drops and the hero recovery cooldown.
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11. Strategy & Priority List
TP to Center, Deploy to Lv. 3 Cluster Immediately
At battle start, TP into Zone 3 (center 60×60) looking for a cluster of at least 3 relatively close Lv. 3 oilfields. Send "max minus 1" squads to collect Lv. 3 oilfields (moving on to a Lv. 2 if there are no available Lv. 3 closer). Use your last squad to hunt Armed Patrols for tech XP.
Grab Every Scattered Oil Drop You See
Scattered oil collection uses a free probe squad that doesn't take a queue slot. Always have it active. Each drop is 1,000–6,000 oil for zero effort. NEVER don't have this squad collecting scattered oil.
Recall Before Hidden Oilfields Spawn
The 60-second warning at 9:00 and 19:00 is your cue. Pull squads off regular oilfields so they're free to race for the much more valuable hidden spawns at 10:00 and 20:00. Hidden oilfields collect at 6.25× the speed of Lv. 3 fields.
Use Free Teleports Aggressively
You get 5 free TPs — burn them. After draining a cluster (~12 min), TP to a fresh one.
If you are PD30 with all T10 troops, Always Attempt the Refinery (23:00–30:00)
Even 5–10 seconds of occupation = 20K oil (rank 10). That's more than 10 minutes on a Lv. 3 field. Send at least one squad.
Don't Fight Unless You Know You Can Win
Hero recovery is 5 minutes. Losing a battle makes the heroes unavailalbe for ~17% of your total time in the event. If an enemy march is incoming and you can't win, recall your squad — you keep all collected oil on recall.
12. Pre-Battle Checklist
13. Quick Reference Cheat Sheet
| If… | Then… | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| You're about to enter | TP into Zone 3 (center), nearest Lv. 3 cluster | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| You see the 60s Hidden Oilfield warning | Recall squads, pre-position a fresh full-load squad in center | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| The refinery is open and you're idle | Send one squad to the refinery, period | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| An enemy march is incoming and you can't win | Recall — keep what you have, avoid drops and hero CD | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 2+ heroes are in recovery | Stop attacking; just collect and probe | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| PvP Threshold Knowledge — Members Only | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Skill Timing Tricks — Members Only | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
TL;DR — The 30-Second Version
- 1. TP into the center zone immediately. Deploy max-1 squads to Lv. 3 oilfields, use last squad to hunt patrols for tech XP.
- 2. At the 60-second Hidden Oilfield warning (9:00 / 19:00), recall everything and race for the much faster hidden fields.
- 3. The tech tree is your biggest edge — decide your picks early and keep hunting patrols until the tree is fully unlocked. Value Metrics — Members Only
- 4. Use your 5 free TPs aggressively — after draining a cluster (~12 min), TP to a fresh cluster worth 30K+ oil.
- 5. At 23:00, send a squad to the Refinery. Even 5 seconds there = 20K oil. Don't skip it. Only if you are PD30 with all T10 troops
- 6. Don't fight unless you'll win. Hero recovery is 5 minutes. If attacked, recall — you keep all collected oil.