Why are shapeshifters S tier if vitals look fine?
Because they bypass your best tools — only behavior and memory catch them.
Night At The Infirmary tier list — hardest anomalies
This Night At The Infirmary tier list ranks anomaly and night difficulty for Beta UPD 1 on Roblox. Rankings use S / A / B / C tiers with visual markers — provisional until more players confirm tells after each patch.
Tiers reflect Sanity cost, detection difficulty, and punishment for mistakes — not lore importance. Shapeshifters rank high because devices lie; tutorial vitals anomalies rank lower because BPM and temperature scream obvious.
Cross-check entries on the anomalies hub, Night 2 guide, and sanity guide.
Use this page when someone asks "hardest anomalies night at the infirmary" — answer is shapeshifters and faceless on Night 2, not Night 1 teaching spikes.
Tier list is updated July 2026 — not affiliated with A.D. Games official rankings (none exist publicly).
How we rank
S tier — Requires behavioral reads or multi-step confirmation; devices unreliable; high Sanity drain on failure.
A tier — Strong vitals tells but timing pressure or mid-cast reveals.
B tier — Clear vitals mismatch; forgiving if you check monitor before cast.
C tier — Teaching anomalies on Night 1 with obvious 0 BPM or extreme temperature.
Night difficulty tiers use the same letters — Night 2 shapeshifter pressure outranks Night 1 teaching pace.
Visual markers in tables: 🟥 S · 🟧 A · 🟨 B · 🟩 C — scan quickly during play breaks.
Rankings exclude script exploits and co-op carry — solo doctor shifts only, matching Beta footage.
When A.D. Games patches tell RNG, tiers update on this hub — bookmark updates for change dates.
Mistakes each tier punishes
🟩 C tier mistake — Ignoring tutorial phone; admitting without any vitals ever.
🟨 B tier mistake — Skipping temperature because BPM looked fine once.
🟧 A tier mistake — Finishing cast during mid-cast morph because "monitor was green at intake."
🟥 S tier mistake — Trusting second Casey duplicate because devices still green; staring at faceless VIP patient.
Use mistakes as self-coaching — which tier matches your last failed summary screen?
Anomaly difficulty tiers
Community Night At The Infirmary anomaly rankings from Beta footage and shift logs:
| Entity / type | Tier | Why |
|---|---|---|
| Shapeshifters | 🟥 S | Devices read normal — identity only |
| Faceless patients | 🟥 S | Stare drain + deny timing |
| Mid-cast morphs | 🟧 A | Vitals OK until limb step |
| Hallway "main event" spawns | 🟧 A | Sanity spike + registration rush |
| Zero BPM anomalies | 🟨 B | Monitor obvious if connected |
| Temperature outliers | 🟨 B | Gun read before cast |
| Night vision entities | 🟨 B | Confirm vitals — hallucinations exist |
| Tutorial first anomaly | 🟩 C | Phone explains exorcism |
Night difficulty tiers
Night difficulty is not just enemy HP — it is information reliability. Night 1 teaches honest vitals; Night 2 removes that crutch while keeping the same OR layout.
Queue Night 1 until exorcism and cast chains feel automatic. Queue Night 2 only when you can recall every patient name treated that shift.
Future nights will likely climb to S tier by stacking shapeshifter variants with new environmental events — watch this table after each UPD.
| Night | Tier | Notes |
|---|---|---|
| Night 2+ (shapeshifters) | 🟥 S | Devices lie — behavioral detection |
| Night 1 (mid-shift) | 🟧 A | Jumpscares + first exorcism |
| Night 1 (opening) | 🟨 B | Tutorial phone + Dale/Casey |
| Lobby / tutorial phone | 🟩 C | No patients yet |
S tier deep dive — shapeshifters & faceless
🟥 Shapeshifters — Ranked S because they attack your Night 1 training. Players who speed-run casts without memory check lose Sanity on Casey duplicates, Dallas self-IDs, and buddy-face mimics. Counter: deny at desk, same-night name log, dialogue paranoia.
🟥 Faceless patients — Ranked S because the counterplay is anti-interaction — do not stare. Curiosity kills Sanity bars. Counter: brief glance, deny/exorcise, no night vision zoom.
Both S tiers appear once Night 2 briefing plays. They are not random difficulty spikes — they are the intended skill check before future UPD nights.
Named patient risk (Beta footage)
Not every Night At The Infirmary patient name carries equal risk — context matters more than the name string:
| Patient / pattern | Tier | Reason |
|---|---|---|
| Second Casey same night | 🟥 S | Shapeshifter copy pattern |
| John / Walter ID slip | 🟥 S | Identity mismatch tell |
| Dale tutorial (first) | 🟩 C | Teaching human case |
| Ariana first appointment | 🟨 B | Normal unless duplicate |
| VIP Robux flavor line | 🟩 C | Attitude alone — still vitals-check |
Suggested progression by tier
C tier mastery — Finish Night 1 opening with phone briefing understood. Redeem UPD1 if available.
B tier mastery — Exorcise at least one vital-sign anomaly cleanly. Practice temperature before fiberglass.
A tier mastery — Survive mid-shift jumpscare without mis-clicking cast chain. Sanitize beds reliably.
S tier mastery — Clear Night 2 with at least one shapeshifter denied or exorcised via behavior, not BPM.
Tier list is a study order — not a flex. Skipping to Night 2 early is how Beta players post six-mistake summary screens.
Tool priority tiers (doctor loadout)
Which Night At The Infirmary items matter most when triaging:
| Item | Tier | Role |
|---|---|---|
| Heart monitor | 🟥 S | Primary BPM tell — when it works |
| Wooden crucifix | 🟥 S | Only banish tool |
| Temperature gun | 🟧 A | Fast ~37 check |
| IV pump | 🟧 A | Required for real treatment chain |
| Bed sanitizer | 🟧 A | Sanity recovery |
| Night vision | 🟨 B | Situational — hallucination risk |
| Fiberglass cast | 🟩 C | Last step — never before vitals |
Night At The Infirmary tier list wiki — full write-up
This Night At The Infirmary tier list ranks hardest anomalies and night difficulty for Roblox Beta UPD 1 using S A B C tiers with visual markers in table cells — 🟥 S, 🟧 A, 🟨 B, 🟩 C — so mobile readers scan risk quickly. Rankings reflect Sanity cost, detection difficulty, and mistake punishment, not lore popularity.
Shapeshifters and faceless patients occupy S tier because devices lie or stare mechanics drain Sanity — Night 2 design pillars. Mid-cast morphs and hallway main events occupy A tier — vitals may lie only after intake or attention splits. Zero BPM and temperature outliers occupy B tier when players use monitors and guns correctly.
Tutorial first anomalies occupy C tier — teaching crucifix on Night 1 before shapeshifter lies begin Night 2. Night difficulty table ranks Night 2 plus as S night tier — behavioral detection mandatory — while Night 1 opening remains B tier teaching pace. Tool priority table ranks heart monitor and crucifix S tier — always relevant — and fiberglass C tier — last step only.
Patient duplicate patterns — second Casey same night, John Walter identity slips — appear in patient risk table as contextual S signals. Progression section orders study: master C and B tiers on Night 1 before claiming Night 2 S tier clears. Mistakes-by-tier section maps common fail screens to tier labels for self-coaching.
Tier list updates track A.D. Games patches via updates hub — July 2026 baseline may shift if monitors gain shapeshifter flags or new nights add entities. Do not conflate tier labels with SHARDS rewards — separate systems. Scripts excluded entirely per site plan DO NOT BUILD policy.
Hardest anomalies search intent from Google should resolve here — shapeshifters first, faceless second, mid-cast morphs third — with links to Night 2 guide, anomalies hub, and sanity guide for mechanics beyond ranking tables.
Tier markers in tables use emoji squares for quick mobile scan — 🟥 S highest danger through 🟩 C teaching tier.
Re-rank community clips locally if patch changes tell RNG — wiki tier is consensus not personal grudge.
Night 1 only players should not skip to S tier night guides — tier list assumes Night 1 exorcism competence.
Faceless tier S ranking independent of shapeshifter tier S — both can appear same night stacking stress.
Tool tier fiberglass C reflects priority not uselessness — humans still need full cast after vitals pass.
Patient risk table names Beta footage only — Rosco Matthew Audrey Cedrilia Courtney Quinn unverified spawn rates.
Tier FAQ below answers SHARDS confusion and Night 3 speculation — read before commenting patch leaks.
Animal Hospital difficulty comparisons irrelevant — tier list covers Night At The Infirmary PlaceId only.
Tier list wiki verified July 2026 — refresh with updates when UPD 2 ships.
Tier list deep dive — ranking philosophy for Beta
S tier entries must pass two tests: high Sanity cost on failure AND low device trust — shapeshifters and faceless both pass.
A tier entries fail one test — mid-cast morphs still trust devices at intake; hallway events still trust OR focus.
B tier entries trust devices if you use them — temperature outliers forgive players who scan before fiberglass.
C tier entries teach one skill each — tutorial anomaly teaches crucifix; VIP line teaches patience not mechanics.
Night tiers stack atop anomaly tiers — Night 2 S night facing B anomaly still harder than Night 1 B night facing B anomaly.
Tool tiers rank priority not power — fiberglass C tier is still mandatory for humans after vitals pass.
Patient duplicate tiers are contextual — first Dale C, second Dale same night jumps toward S pattern.
Do not tier by jump-scare loudness — quiet shapeshifter beats loud bell if devices stay green.
Community tier drift happens after patches — July 2026 baseline may shift if monitors gain shapeshifter flags later.
Speed-clear players still respect S tier labels — fast deny beats fast cast on duplicates.
Tier list complements anomalies hub — hub names types, tier ranks pain.
Tier list complements sanity guide — S tiers predict Sanity bankruptcy paths.
No anomaly is C tier on Night 2 if it wears a duplicate face — context upgrades difficulty one letter minimum.
Scripts/exploits excluded from all tiers — wiki DO NOT BUILD policy from site plan applies.
Revisit tier list after personal first Night 2 clear — self-tier your mistakes against tables above.
Extended tier list guide (Night At The Infirmary wiki)
This Night At The Infirmary tier list answers "what kills most runs" — not "what is scariest cosmetically."
🟥 S tier shapeshifters win because Night 1 trained you to love green monitors — Night 2 punishes that love.
🟥 S tier faceless patients win because curiosity kills Sanity — the map is small but the stare tax is large.
🟧 A tier mid-cast morphs win on timing — vitals at intake were bait; limb set was truth.
🟧 A tier hallway main events win on split attention — OR patient plus hallway scare equals mis-click.
🟨 B tier vital anomalies are honest enemies — learn them fast on Night 1; they become relief spawns on Night 2.
🟩 C tier tutorial anomalies exist so crucifix clicks happen at least once before shapeshifter lies begin.
Night tier and anomaly tier interact — Night 2 S night plus S anomaly is stacked difficulty, not bad RNG alone.
Tool tier separates what to trust — crucifix and monitor stay S priority even when monitor lies on shapeshifters because non-shapeshifter threats still exist.
Patient-name tier table flags duplicate Casey — not because Casey is evil, but because second Casey is a pattern.
Progression section is a study order — skipping C tier mastery is how players queue Night 2 with zero exorcism confidence.
Tier list updates track updates — if UPD 2 adds Night 3, expect new 🟥 rows.
Do not confuse tier list with SHARDS rewards — performance and ranking labels are unrelated systems.
Scripts and exploits are not tiers — do not build tier pages for them; wiki skips script content by design.
Hardest anomalies query from Google lands here — bookmark for Night 2 prep before queue.
Tier list quick reference
Night At The Infirmary tier list uses 🟥 S · 🟧 A · 🟨 B · 🟩 C markers in tables above.
🟥 S: shapeshifters, faceless patients — devices lie or stare punishes.
🟧 A: mid-cast morphs, hallway main events, Night 1 mid-shift.
🟨 B: zero BPM, temperature outliers, night vision entities with vitals confirm.
🟩 C: tutorial first anomaly, Dale opening cases, VIP flavor lines alone.
Night 2 overall: 🟥 S night tier — behavioral detection required.
Night 1 opening: 🟨 B — honest vitals teach exorcism.
Tool priority: monitor and crucifix 🟥 S · temperature and IV 🟧 A · fiberglass 🟩 C last.
Progression: master C → B → A before claiming S-tier Night 2 clears.
Patient duplicate Casey same night: 🟥 S pattern in patient tier table.
Updates when A.D. Games patches — check updates.
Tier list FAQ
Will Night 3 outrank Night 2?
Likely when content ships — this hub updates per UPD.
Are Night 1 anomalies useless to learn?
No — they teach exorcism timing and cast flow under lower Sanity pressure.
Do tiers match SHARDS rewards?
No — end-shift SHARDS scale with performance, not tier labels.
Why is fiberglass C tier?
It is the last step — ranking reflects priority, not power. Never cast before vitals pass.
Related pages
Matched by build plan, shared topics, and guide progression — not random related links.