Buy survival and information tools first: Coffee for Sanity, recovery items for mistakes, then camera or event tools once later Shifts start exposing hidden threats. Spending should answer the thing killing your runs. If Sanity ends the run, buy Coffee; if events kill patients, bring the counter item before low-impact purchases.
I buy for the thing that killed the last run. If Sanity ended it, Coffee comes first. If enemy damage ended it, recovery or defense matters more. If fire or rituals keep breaking rooms, bring the tool that answers those events.
In actual runs, I keep the order short enough to remember while alarms and room prompts are going off: Identify the last wipe cause. Buy Coffee or recovery if Sanity or damage caused it. Buy event tools if fires or rituals caused it. Buy information tools when camera/photo misses caused it. That order keeps the desk from drifting open while someone is still fixing a room or recovering Sanity. It also gives public lobbies a simple rhythm: one player says the job, one player handles it, and nobody adds a fresh patient until the current problem is under control.
Do not buy an item because it sounds exciting if it does not fix the current failure. The best early purchase is the one that stops the next wipe, not the one that looks best in a list.
The habits that save the run are small but noticeable. Do not treat this as a full item tier list. Upgrade order should change when the failure reason changes. Stop new admits until someone owns the current decision. Animal Hospital becomes harder when the desk opens a patient while another threat is still unresolved. Most failures come from stacking problems: a rushed Shutter open, an unfinished treatment room, and a Sanity drop happening at the same time. When another player already has the problem covered, the best help is often boring: hold the Shutter, watch the next patient, or finish the room that got interrupted. Crowding the same spot usually hides the next mistake instead of fixing the current one.
For quick lobby decisions, the answers stay simple. Should everyone respond at once? No. Send one responder when possible and keep the Shutter covered. What should solo players do first? Secure the Shutter, solve the active problem, then return to treatment or recovery. If the lobby feels messy, name the active problem out loud: unchecked patient, unfinished treatment, low Sanity, enemy, fire, ambulance, or ritual. Once the group knows which one is active, the next move is much easier to choose.
After the danger clears, I like taking one short reset before speeding up again. Check Sanity, check the room that got interrupted, and check whether the next animal outside has been fully screened. That tiny pause feels slow, but it stops one mistake from turning into three.