30 Floors Up Progression

Start 30 Floors Up by treating Apartment 3004 on Floor 30 as your operating base, then push downward through the building while keeping enough water, food, health, and Stamina for the return. The long-term objective is not simply to reach a lower floor: survive the day-based hazards, prepare for the Day 3 utility cutoff, gather enough medical and utility supplies, and arrive at Rooftop Extraction before the final migration pressure overwhelms your route.

Your first session should establish three things: a stocked fallback room, a reliable way to move vertically after the elevator stops, and a routine for ending each night safely. Do not measure progress only by the furthest floor visited. A short trip that returns with water, medicine, or a route-opening tool can advance a run more than a risky descent that leaves you injured and unable to get home.

How the building route advances

Progression is a linear survival run with route choices inside each stage. You begin in Apartment 3004, explore nearby upper floors, move through blocked corridors and alternate vertical paths, and gradually reach lower resource areas before making the final climb or route change toward the Rooftop. A death ends that run. Reaching the roof is also not the final checkpoint: you must wait at the extraction point and board the helicopter.

The calendar creates the main gates. Before Day 3, water, electricity, and telephone service are available for initial preparation. On Day 3, those utilities are recorded as shutting down and the elevator stops working, so future movement relies more heavily on stairs, the Bathroom Vent, the Elevator Shaft, and other walkable service routes. The exact in-game timing can vary or may not be fully verified, so use the current day and utility state on your screen rather than assuming you have a fixed number of minutes.

The middle of the run is a resource-and-route phase. Floor 19's Kitchen Level can support food searches, Floor 11's clinic can supply medical items, and B1's parking garage contains a large cistern and a Generator Room. These destinations are useful because they answer different survival problems, but they are not automatically safe. Corridors can contain infected, blocked doors can redirect you, and heavier containers can make a retreat harder.

The final progression gate is Day 15's Great Migration. The recorded event creates a large infected movement through the building, but its exact timing and trigger may depend on the current version or server. Treat it as a deadline for finishing your supplies and route plan, not as a reason to wait inside a dangerous hallway. Once you have a viable roof route, reserve enough health and Stamina to reach the rooftop, wait at the designated point, and board the helicopter; the combat guide explains when fighting is safer than forcing a blocked route.

Resources and routes that decide a run

These systems determine whether a floor visit becomes progress or a failed detour:

• Apartment 3004: Your Floor 30 starting room is the place to sort supplies, recover, sleep, and stage the next trip. Keep a fallback stock here instead of carrying everything into the building.
• Water and Thirst: Water is the most important pre-Day 3 preparation because normal service is recorded as ending at that cutoff. Fill available containers before the shutdown, and treat the B1 cistern, rooftop tank, or rain collection as possible later sources only when the current route lets you use them safely.
• Hunger and Rations: Food keeps longer trips possible, but a ration setting can consume supplies faster than expected. Pack enough for the planned distance and the return, not just the destination.
• Health, Infection, and Bandages: Floor 11's clinic is a useful medical objective. Damage or infection reduces the margin for the next route, so stop and recover instead of turning one bad corridor encounter into a fatal descent.
• Stamina and Fatigue: Stamina controls how safely you can move away from infected and return with weight. Fatigue makes repeated trips less reliable; finish a run at a defensible room and sleep or prepare to rest rather than forcing another floor.
• Doors and bracing: Locked doors are a first barrier, while furniture can brace them and make a position hold longer. Damaged doors can be repaired with recorded materials such as planks, screws, and a hammer or screwdriver, but noisy repairs should not be started beside an active threat.
• Bathroom Vent: The Floor 30 vent is a light-load bypass for part of the route. It requires removing the vent hardware and crawling through; large objects such as buckets and boards cannot be carried through it, so use it for a person or small route-essential items.
• Elevator Shaft and stairs: After the elevator stops, the shaft can connect floors if you first open the Floor 28 access with the required tool. It is an exposed option with reported fall and infected risks. Stairs remain useful but can be blocked, so keep an alternate route in mind before committing to a descent.

Use these elements as a route package. For example, a clinic trip needs enough Stamina to return, a food trip needs carrying capacity, and a water trip may be worth more before Day 3 than after it. The best destination changes as the calendar and your current condition change.

Your first route from Floor 30

1. Secure Apartment 3004 before leaving. Put food, water, medical supplies, a weapon or tool, and spare light sources in reachable storage. Check Hunger, Thirst, Health, Fatigue, and Stamina, then leave with only the load needed for the first trip. Your checkpoint is a usable fallback room; if the inventory is already too heavy, the next action is to reduce the load rather than descend.
2. Prepare water before exploring for distance. Collect water in the containers available to you and store the surplus in the apartment, including a bathtub or other large storage option when the route allows it. The checkpoint is a reserve you can return to without immediately needing another tap. If you cannot carry a large container through the vent, take it by a normal route or leave it staged at base.
3. Test a nearby vertical route. Use the accessible stairs or the Bathroom Vent to learn which opening is usable from Floor 30. Move quietly, watch your Stamina, and do not turn a route check into an extended fight. Once you know where the return opening is, go back to Apartment 3004 and decide whether the next trip needs a weapon, medical item, or tool.

Collect water before the Day 3 cutoff

This moment supports the early progression step of gathering and storing water before conserving supplies after the utility cutoff.

Load 3:38 · Gather containers for water

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4. Push toward Floor 29 and the upper-floor work areas. The recorded route includes blocked or locked paths and infected in corridors, so check each doorway before entering and preserve space behind you. Floor 28 contains a Workshop and an Elevator Shaft entrance; the Workshop door may require a crowbar or similar opening tool. The checkpoint is access to a practical alternate route, not proof that every lower floor is now safe.

Navigate blocked routes toward Floor 29

This moment supports the route decision around locked paths and infected corridors while pushing from Floor 30 toward Floor 29.

Load 7:44 · Follow blocked routes toward Floor 29

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5. Return before condition becomes the hazard. On the way back, stop at a defensible room if infected, low Stamina, or heavy weight makes the original route unsafe. Close and brace a door when you need time, then continue only after Health and Stamina support the return. If a route is blocked, use the alternate opening you identified rather than repeatedly attacking the same obstruction.
6. Convert the first trip into a Day 3 plan. At base, store useful finds, separate bulky water from travel items, and mark whether stairs, the vent, or the Elevator Shaft is your likely post-blackout path. Replace or repair essential tools where possible and keep a light source ready. The transition is a deliberate next trip: do not spend the remaining pre-cutoff time on low-value rooms while water and lighting are still unresolved.
7. Visit the resource floors only with a return margin. When the route is stable, plan separate objectives for Floor 19's kitchen, Floor 11's clinic, and eventually B1's cistern or Generator Room. Bring containers for the destination's resource, but avoid carrying every heavy item through a narrow route. A successful checkpoint is arriving home with food, medical supplies, water, or a route tool while still able to sleep and defend the base.
8. Finish the run by staging the rooftop approach. Before the Day 15 migration window, choose a route to Rooftop, preserve enough supplies for the final push, and avoid treating the roof itself as victory. At the rooftop, move to the designated extraction point, wait for the helicopter, and board it. Boarding completes the run; dying in the building ends the run.

Priorities and recovery decisions

Use this priority order when several tasks compete:

1. Water before Day 3. Fill and store what you can before the utility cutoff. After the cutoff, switch to stored water, rain collection, the B1 cistern, or the rooftop tank only when those options are reachable and usable in the current run.
2. A repeatable return route. Know how to get back from the next floor before carrying valuable supplies deeper. The vent is useful for light movement, while stairs and the Elevator Shaft handle different weight and risk constraints.
3. Health and Stamina over extra loot. A medical item or safe retreat is more valuable than one more room when your condition is falling. Do not let a full inventory prevent a sprint or a safe door closure.
4. Night security. After roughly 19:00, prioritize sleep or a defensible rest setup, locked doors, and bracing. Leave a retreat path so your own furniture does not trap you during a breach.
5. Day 15 readiness. Complete optional searches before Great Migration pressure rises. Save enough food, water, medical support, and light for the rooftop route rather than assuming you can resupply during the final event.

Common mistakes have concrete recoveries:

• You leave without enough water: Return to Apartment 3004 while the route is still clear and make the next trip a water run. Do not compensate by pushing deeper while Thirst is already low.
• You take a bucket into the Bathroom Vent: Drop or stage the bulky item at a normal doorway, then use the vent only for yourself and small essentials. Reconnect with the container from the other side instead of forcing the vent route.
• A stairwell or fire door is blocked: Stop spending Stamina on the same obstruction. Backtrack to the known opening, use the Workshop or Elevator Shaft route if unlocked, and return later only with the needed tool or a safer approach.
• You attract infected in a corridor: Close a door, brace it if there is time, and retreat to the last defensible room. Fight only to create space; once contact breaks, recover Health and Stamina before resuming.
• A repair or generator action makes too much noise: Move away from the sound source and let the immediate threat separate before returning. Keep an alternate exit open so a defensive repair does not become a dead end.
• You reach the Rooftop but the run does not finish: Stay at the recorded extraction point and wait for the helicopter, then board it. Reaching the roof alone is a checkpoint, not the rescue confirmation.
• You die before extraction: That run is over. On the next attempt, use the prior run's route knowledge to shorten unnecessary searches, secure Day 3 water earlier, and bank the resulting Cash for Classes. Survival grants recorded daily Cash, while successful rescue grants a larger bonus; use the current Class menu to confirm unlock costs.

First-time rooftop progression questions

Where does a successful extraction take you?

The recorded ending takes a player who boards the helicopter to a hospital roof, where the survival outcome is confirmed. Dying inside the building ends that run instead.

Is the Day 6 rain window guaranteed in every run?

The local timeline records a Day 6 rain window, approximately 09:00–17:30, but the available records do not confirm whether its trigger changes by version, server, or mode. Treat it as an opportunity, not as your only water plan.

Can Cash be traded between players?

No. Cash is an individual progression currency used in the Classes menu to unlock roles such as Medic or Plumber, so plan unlocks from your own survival and rescue rewards.

What is the False Hope Cash reward?

The records associate False Hope with 60 Cash, but do not confirm the event's trigger or whether it represents a failed rescue or a trick ending. Do not plan a route around that reward; rely on the current in-game state.