Event
Ambulance Event
Updated:
6+ patients arrive simultaneously starting Shift 4 — Dr. Harlow announces an anomaly attack. Recurring every 5 shifts. Bonus cash on successful completion.
Overview
Ambulance Event is the periodic throughput surge that defines the mid-game pacing. Per Fandom, it begins on Shift 4 and recurs every 5 shifts (so Shift 4, 9, 14, 19...). Six patients arrive simultaneously and occupy any available rooms; some are already on fire or in critical condition. Intense music plays continuously until every emergency in the surge resolves, and bonus cash is awarded on full completion.
The in-fiction trigger is delivered by Dr. Harlow — he announces an anomaly attack has caused casualties, which is the in-game framing for why the ambulance is arriving. News Bunny's TV broadcast on Shift 4 specifically (see /wiki/npcs/news-bunny) is the pre-event warning that gives the player a brief positioning window before the patients land.
The difficulty scaling is documented: subsequent ambulances carry progressively more critical patients. The Shift 4 surge is forgiving; the Shift 9 surge is harder; the Shift 14+ surges turn into multi-emergency cascades where the per-patient timers stack on top of each other.
Video Guide
Trigger Conditions
- Activates on Shift 4 (first occurrence)
- Recurs every 5 shifts thereafter: Shift 9, 14, 19, 24...
- Cannot be prevented — the trigger is shift-number gated, not action-dependent
- Pre-event warning: News Bunny TV broadcast on Shift 4 specifically
Best vs Worst Response
Pros
- ✓ Triage burning patients first via Fire Extinguisher (highest cascading risk if untreated)
- ✓ Critical Patient timer cases next (100-120s clock, fixed budget)
- ✓ Apply Speed Cola if available before sprinting between rooms — Paramedic class advantage
- ✓ Coordinate with team verbally — assign rooms to teammates to parallelise treatment
Cons
- ✗ Processing stable admissions first while critical/burning patients pile up — guaranteed cascade
- ✗ Trying to treat in-place instead of using rooms — slower per-patient resolution
- ✗ Burning Coffee/Chocolate on routine sanity recovery during the surge (save for high-drain emergencies)
- ✗ Improvising without checking the emergency tab — different patient flags need different chains
At a Glance
At a Glance
- Timer
- Surge
- First appears
- Shift 4
- Location
- Hospital lobby + rooms
How to Resolve This Event
Pre-positioning matters. When News Bunny appears on the check-in TV at Shift 4, the broadcast is your warning to stage Fire Extinguisher, restock treatment items, and move toward the lobby intake area. Paramedic class with Large Speed Cola already in inventory is the highest-utility loadout for this event.
When the six patients arrive, scan the room board immediately. Burning patients (visible flame animation) are the highest priority because they cascade: untreated fire patients spread to room hazards, generate Patient on Fire follow-up events, and drain sanity from anyone in line-of-sight. Hit them with Fire Extinguisher first.
Critical Patient flags are second priority. Each Critical Patient has its own 100-120 second per-patient timer (sometimes 60s on later shifts). Get them into a treatment bed and run the diagnosis-treatment chain before the per-patient clock hits zero.
Stable admissions process last. They have no per-patient timer; they sit in the room until you have bandwidth to handle them. Don't rush stable cases at the expense of critical cases.
For team play, divide the room board verbally. One teammate handles fires, another handles critical-timer cases, a third handles stable admissions. The bonus cash awarded on successful completion is split across the team and rewards coordinated triage.
Difficulty scaling: Shift 9+ surges include progressively more critical patients. Don't extrapolate from Shift 4 success — the Shift 14+ surges can stack 3-4 simultaneous critical timers plus burning patients. Stockpile Fire Extinguisher charges, Speed Cola, and treatment items between scheduled ambulance shifts.
Failure cascades: if patients pile up unhandled, room density triggers Fire Extension events (fire spreads to occupied rooms) and Monster Eating Patient events (Bed Monster engagements that weren't responded to). The cascade can wipe entire shifts on Shift 9+.
Patch History
No documented balance changes to the Shift 4 first-trigger or 5-shift recurrence interval. Per Fandom: the progressive difficulty scaling (more critical patients per subsequent ambulance) has been stable.
Frequently Asked Questions
- Shift 4, then every 5 shifts thereafter (Shift 9, 14, 19, 24...). Shift-number gated; cannot be prevented.
- Six patients near-simultaneously per Fandom. Some are already on fire or in critical condition; subsequent ambulance events carry progressively more critical patients.
- Watch for News Bunny's check-in TV broadcast on Shift 4 — that's the pre-event warning. Stage Fire Extinguisher, restock treatment items, position near the lobby intake. Paramedic class with Speed Cola in inventory is optimal.
- Burning patients first (Fire Extinguisher, highest cascade risk), Critical Patient timer cases second (100-120s budget per case), stable admissions last (no per-patient timer).
- Yes — subsequent ambulances carry progressively more critical patients per Fandom. The Shift 4 surge is forgiving; Shift 14+ surges become multi-emergency cascades.
- Yes — bonus cash awarded on successful completion. Scales with patient count handled.
- Dr. Harlow announces the anomaly attack causing casualties. See /wiki/npcs/dr-harlow for the in-fiction framing.
- Paramedic for the Speed Cola starter (transit time advantage). Head Nurse for the inventory expansion (multi-item supply runs). Security for the combat coverage if anomaly-related hostiles spawn during the surge.
When does the Ambulance Event first appear?
How many patients arrive in an Ambulance Event?
How do I prepare for an Ambulance Event?
What's the prioritisation order during an Ambulance Event?
Does the Ambulance Event get harder over time?
Is there a reward for completing the Ambulance Event?
Who announces the Ambulance Event in-game?
Which class handles Ambulance Event best?
Six patients, one shift moment
The Ambulance Event is the throughput stress-test that defines Shift 4+. Per Techwiser's events guide, the surge brings "6 incoming patients; some arrive on fire or critically injured" — meaning the queue isn't just six stable admissions, it includes timer-bound emergencies you have to handle in parallel.
The shift trigger is Shift 4 (first appearance), then every fifth shift after (9, 14, 19...). Sources have historically conflated "Shift 4-5" because the first ambulance is at 4, but it sometimes feels like Shift 5 because of the way the warning notification fires.
The triage order that works
Per the shortest-timer rule (also in Techwiser's events guide — "when two or more emergencies trigger at the same time, go by the shortest timer first"):
- Patient on Fire — 60s, but takes about 5s to resolve with Fire Extinguisher. Do these first.
- Critical Patient — 100-120s, but needs FULL treatment chain, not just bed placement.
- Standard admits — no timer, last priority.
The trap is treating the ambulance as "six normal patients but faster". The mixed timer composition is what makes it punishing.
What to stockpile before Shift 4
If you reach Shift 4 without these in inventory, the ambulance catches you unprepared:
- Fire Extinguisher (handles patient-on-fire + any fire-in-room cascade)
- Coffee or Chocolate (sanity buffer for the wave)
- Bandages + Cough Syrup + Medkit (most common treatment items)
- Empty inventory slots for Photo Camera + treatment swaps
Run the Shift 3 Supplies Shop stop with this list in mind.
What goes wrong when emergencies stack
The Ambulance can fire concurrent with other random events — Fire-in-Room, Death Ritual, Bed Monster. Per Techwiser, the shortest-timer rule still applies: Bed Monster (30s) > Death Ritual (40s contested timing) > Patient on Fire (60s) > Patient Fainted (60s).
Sources: Techwiser events guide, Pro Game Guides emergencies.