Tool

Gun

Ranged weapon with 20-25 uses before depleted (bullet counter decreases even on a miss). Shooting an anomaly reveals its shapeshifted form and knocks it out temporarily.

Shooting an innocent patient/visitor instantly faints them with a death timer. Shooting a lore character (e.g. Ratthew, Ron from Accounting) wastes a bullet with no effect.

Shooting an already-treated patient instantly kills them (counts as a patient death). Shooting another player drains both shooter and victim's sanity.

Gun is a ranged combat tool in Animal Hospital (Anomaly) with 20-25 uses before it's depleted — the bullet counter drops even on a miss.

Shooting an anomaly reveals its true shapeshifted form and temporarily knocks it out, but the same gun is risky to use carelessly.

Shooting an innocent patient or visitor instantly faints them with a death timer, and shooting an already-treated patient counts as a recorded death.

Shooting a lore character like Ratthew or Ron from Accounting just wastes a bullet, and shooting another player drains both shooter and victim's sanity.

Effect & Details

Ranged weapon with 20-25 uses before depleted (bullet counter decreases even on a miss).
Shooting an anomaly reveals its shapeshifted form and knocks it out temporarily.
Shooting an innocent patient/visitor instantly faints them with a death timer.
Shooting a lore character (e.g. Ratthew, Ron from Accounting) wastes a bullet with no effect.
Shooting an already-treated patient instantly kills them (counts as a patient death).
Shooting another player drains both shooter and victim's sanity.

Price: 99-360 Robux (check-in area) or $400-405 (Supplies Shop), available from Shift 1. Free as a starter item (20/25 uses) for the Secret Agent class.

Tips & Strategy

Only fire on confirmed or strongly suspected anomalies — the penalties for shooting an innocent patient, an already-treated patient, or a lore character are all real, documented downsides.
It's available from Shift 1 onward for 99-360 Robux at check-in or $400-405 in the Supplies Shop, so it's an option even early in a run if you can afford it.
Secret Agent players start with one for free (20-25 uses), removing the upfront cost.
Remember the bullet counter drops even on a miss, so don't spray shots at a target you're not sure about.