Animal Hospital Night Shift Hazmat Slime Shift Guide

The Hazmat Team Arrives update introduced a secret slime shift variant where the hospital floods with green slime and a roaming entity community nicknames Slimebert hunts staff. The promotional window ran roughly July 25–27, 2026 (community-compiled), but most mechanics below stayed in live builds after the event UI closed — including the lobby Journal, Firefighter class, Sam hire, and Tiny Anomaly entries. This guide explains how to survive slime nights, coordinate extinguishers, and farm Journal pages without wiping Sanity.

What triggers the slime shift

Community reports describe the slime shift as a secret special night rather than a standard random event. Players stamp a containment form during the shift; once processed, a Hazmat team NPC convoy arrives to help scrub floors. Until Hazmat finishes, slime tiles spread through hallways and Slimebert patrols corridors between treatment rooms.

Exact spawn conditions are community-compiled — some lobbies see slime after high-anomaly nights, others during event replay windows. Treat timing as variable; prepare extinguisher stock and role splits every shift once you unlock the Firefighter class or free lobby extinguishers.

Pair this page with Events Guide for standard fire timers and Journal Guide for anomaly page unlocks tied to slime encounters.

Hazmat slime shift walkthrough and Slimebert tactics

Slimebert — behavior and Sanity cost

Slimebert (community name) is a large slime entity that swallows players whole when it catches them. Survivors report 20+ Sanity loss per swallow, plus disorientation while ejected. Slimebert does not behave like a Shapeshifter — it roams independently of desk admits and can interrupt treatment runs.

Key behaviors (community-compiled):

• Patrols slime-covered hallways, especially between lobby and right-wing DNA rooms
• Swallow attack is a grab — not blockable with Shutter logic
• Fire extinguisher knocks Slimebert back temporarily but cannot permanently kill it
• Multiple extinguisher bursts create breathing room for escorts and Hazmat cleanup

If Slimebert swallows the Check-in Lead during Ambulance pressure, call a handoff before chasing — one wrong admit during slime chaos often stacks Skinwalker spawns on top.

Fire extinguisher tactics

Two extinguisher sources matter on slime shifts:

1. Free extinguisher beside the Supplies Shop (available from Shift 3 in standard progression)
2. Firefighter class — auto-recharging blue extinguisher in inventory (1,100 Animal Coins unlock)

Basic extinguisher loop:

1. Spot Slimebert pathing on CCTV or audio cues (wet squelch, heavy footsteps)
2. Hold extinguisher aim at center mass; burst until knockback animation plays
3. Escort swallowed teammate toward coffee or safe corner while Slimebert resets
4. Repeat — plan for three to five bursts per encounter on community-tested nights

Extinguisher also clears slime floor tiles that drain movement speed and Sanity on contact. Float should sweep corridors after every Slimebert knockback so medics can reach Rooms 1–5 without skating through hazards.

Firefighter synergy: Firefighter spawns with a dedicated extinguisher that recharges automatically between bursts. Level perks (community-compiled) grant Sanity immunity to fire tiles and Sanity recovery when extinguishing fires — both translate to slime nights where fire events overlap slime coverage. Firefighter is an A/S-tier pick for hazard-heavy metas; see the updated Class Tier List.

Hazmat team arrival

After the containment form is stamped and validated, Hazmat NPCs enter the map (community-compiled sequence):

1. Convoy announcement or UI alert
2. Hazmat staff spawn near lobby or exterior check-in
3. Automated or assisted slime scrub on main hall paths
4. Slimebert pressure drops but does not always despawn instantly

Do not treat Hazmat arrival as shift end — patient timers, Ambulance horns, and anomaly queues continue. Assign one player to guide Hazmat toward worst slime pockets (Emergency Wing choke points, generator hallway) while desk holds Shutter.

Hiring Sam permanently

Sam is a Hazmat-affiliated NPC hireable from the lobby after the event window for roughly $250 cash (community-compiled). Sam persists across shifts once hired and assists with:

• Slime tile cleanup during special nights
• Secondary anomaly containment tasks (community reports vary by shift script)
• Reducing Float workload when Slimebert plus fire events stack

Sam is not a substitute for player extinguisher play — hire Sam once your team stabilizes cash flow from Shift 3+ shop runs. Details on Sam’s dialogue and Journal ties live in Characters.

Tiny Anomaly on slime nights

The Tiny Anomaly presents at miniature size — cute on camera, hostile after check-in. Journal pages for Tiny Anomaly often require letting it check in first (risky admit), then rejecting or documenting behavior. On slime shifts, Tiny Anomaly tell windows overlap with CCTV slime glare — cross-check Anomalies and shutter reject if any layer fails, even when the visitor looks adorable.

Co-op roles for slime shifts

Four-player template (community-tested):

Role	Slime shift duty
Check-in Lead	Shutter + containment paperwork; never chase Slimebert
Firefighter / Float	Primary extinguisher vs Slimebert + tile cleanup
Treatment Lead	DNA rooms; call slime path before escorting patients
Imaging Lead	Rooms 6–8 + CCTV for Slimebert routing

Three-player: Merge Imaging into Treatment; Firefighter or Float must own extinguisher full-time.

Two-player: Alternate desk and extinguisher every Slimebert audio cue — voice comms mandatory.

Journal and Animal Coins during Hazmat

The lobby Journal (below Classes) tracks anomalies, characters, and achievements discovered in live shifts. Completing entries pays Animal Coins — slime-shift exclusives like Slimebert and Tiny Anomaly pages can fund Firefighter (1,100 coins) faster than grinding generic nights. Read Journal Guide before intentionally admitting anomalies just to unlock pages.

Skins and cosmetics (community-compiled)

The Hazmat window added or highlighted skins including Banana Intern, Detective Intern, Fluffy Nurse, Maroon Nurse, Old School Fox Head Nurse, Noir Secret Agent, and Agent Blueberry Secret Agent. Cosmetics do not change slime mechanics but help identify teammates during green-out hallway visibility.

Shift 100 secret cutscene

Community threads mention a Shift 100 secret cutscene tied to long endless progression — details remain community-compiled and may require slime-shift flags. Do not stall public lobbies chasing cutscene triggers; prioritize How to Survive Shifts fundamentals first.

Pre-shift checklist

1. Unlock or assign Firefighter or designate Float with shop extinguisher
2. Stock coffee — swallow Sanity hits stack with slime tile drain
3. Brief team on containment form stamping and Hazmat arrival timing
4. Hire Sam if cash buffer exceeds $250 and you run slime often
5. Open Journal — note missing Slimebert or Tiny Anomaly pages before risky admits
6. Review Hospital Map choke points for slime routing

Related pages

• Events Guide — standard fires and Ambulance during slime
• Class Tier List — Firefighter cost and perks
• Journal Guide — Animal Coin farming and risky admits
• Anomalies — Slimebert and Tiny Anomaly tells
• Characters — Sam NPC and Dr. Harlow Hazmat lines
• Hazmat Team Arrives update — patch summary

Slime shifts punish teams that treat extinguishers as fire-only tools. Permanent Hazmat content rewards players who document anomalies in the Journal and invest in hazard classes — even after the July 2026 event banner disappears.