Combat in 30 floors up is a last-resort space-management problem, not a simple damage race. Fighting is loud and costs Stamina, while an infected hit deals 16 damage normally or 28 damage with a heavy attack. Up to three infected can attack at once. The safest decision is usually to preserve an exit, close a door, or use a quieter route; fight when a corridor, room, or objective cannot be bypassed.
Choose a weapon for the whole trip
Every listed melee weapon can hurt an infected, but the best choice depends on whether you also need the item as a tool. A high Damage number does not describe reach, speed, noise, durability, or the value of keeping that item for a repair. Treat the table as a comparison of confirmed damage and stated use, not as a complete ranking of attack performance.
| Weapon | Damage | Combat and other use |
|---|---|---|
| Spoon | 12 | Very fast; short reach |
| Wrench | 16 | Useful for fixing pipes |
| Knife | 18 | Fast; can pry things open |
| Hammer | 23 | Useful for boarding doors and repairing barricades |
| Crowbar | 25 | Heavy and slow; high damage |
| Baseball Bat | 26 | Wide swings |
Use the rows as a loadout decision. A Spoon is the lightest confirmed damage option but is described as very fast with short reach. A Hammer gives more damage and remains valuable for boarding or repairs. A Wrench is weaker than a Hammer but may be the correct carry if a pipe problem is part of the route. A Knife combines fast attacks with a prying use. The Crowbar and Baseball Bat have the highest listed damage, but their descriptions do not establish that either is always safer: the Crowbar is heavy and slow, while the Bat's wide swings can be a poor fit in a cramped room.
The weapon page is marked as incomplete, so the records do not confirm attack speed values, durability, hitboxes, stamina cost per swing, or whether damage changes by difficulty. Do not infer that a weapon with one more point of Damage will win every encounter. Keep one practical tool when possible, and avoid spending a Hammer or Wrench on a fight if the same item is needed to open a route or secure the apartment.
Read the danger before swinging
The infected are found in corridors, residences, stairwells, and vents. Before entering, identify the way back and check whether a door can separate you from the threat. Do not walk into a room until you know where you will recover, where you can turn, and whether another infected can approach from behind.
Runner is a faster infected type mentioned in play, but its exact health, damage, and movement values are not confirmed. Treat the name as a warning about speed rather than a reason to assume a special weakness. If a Runner or a group closes the distance, use a doorway, stair route, or other obstruction to break contact instead of trying to trade hits in the open.
Spot a Runner before an infected encounter
This moment supports the warning about a fast Runner, multiple infected, fatigue, and the need to keep fighting when a retreat door is lost.
Health makes being surrounded especially dangerous. One normal hit is 16 damage and a heavy hit is 28; three attackers can hit at the same time. On Hard, infected damage and health are reported as 25% higher; on Easy, both are reported as 20% lower. These difficulty adjustments make a one-hit or surround calculator useful for planning, but they do not replace checking your current Health and Stamina before entering a fight. A Bandage restores Health, and a teammate can revive a downed player in co-op, but neither option makes a bad corridor safe.
Player calculator
Zombie hit survival calculator
Estimate damage per hit and how many attacks or simultaneous volleys down the player.
Estimated result
- Damage per infected hit
- 16 HP
- Damage if all attackers hit
- 16 HP
- Single-attacker hits to down
- 7 hits
- Simultaneous volleys to down
- 7 volleys
This counts damage only; the wiki does not publish an attack interval, so seconds to down cannot be estimated.
Assumptions and sources
Assumptions
- Every listed attacker lands one hit in each simultaneous volley.
- Base damage is 16 for a normal hit and 28 for a heavy hit.
- Downed means remaining health reaches zero; attack timing, healing, armor, and revive effects are excluded.
Sources
- https://30-floors-up.fandom.com/wiki/Infection_%26_Health · reviewed 2026-11-04
Noise decides what comes next
Noise attracts infected. The recorded scale is relative and the exact hearing-radius calculation is not established, so use it to compare actions rather than as a guaranteed safe threshold.
| Action | Noise level | Combat implication |
|---|---|---|
| Crouching | 6 | Quietest listed movement |
| Walking | 14 | Quieter approach than sprinting |
| Falling | 24 | Can alert nearby infected |
| Sprinting | 32 | Useful for escape, but announces movement |
| Melee attack | 35 | Every swing can extend the encounter |
| Dropping metal | 45 | Avoid near a planned fight |
| Hammering repairs | 55 | Do loud work only with an exit or cover |
| Shouting or glass breaking | 70 | Likely to draw a wider response |
| Radio, high volume | 90 | Can serve as a deliberate lure |
| Generator running | 110 | Continuous attention source |
Crouching is quieter than Walking, and both are quieter than Sprinting or a melee attack. That does not mean crouching is always correct: it can leave you without enough Stamina or distance if a threat is already close. Sprint to reach a doorway or create separation, then stop making noise once the route is secure. Repeated noise in one place keeps attention there; moving quietly gives that alert a chance to fade.
A Radio can be used as a decoy. Low volume is listed at 22 and high volume at 90. Leave it playing in a room to pull infected away, then turn it off when you no longer need the pull. High volume covers a wider area and holds attention longer, but it also creates a much stronger signal. A radio is therefore a route tool, not a free combat win: plan where the infected will go and keep your own exit open.
Doors make better combat tools than open space
Closed and locked doors are the first line of defense. Closing a door reduces what carries through the doorway, and a braced door holds much longer than a locked door. Push furniture such as couches or chairs against a closed door when you need time to heal, sleep, sort supplies, or retreat. If a door is damaged, use Planks, Screws, and a Hammer to repair it; repairs can raise a door to 150 integrity, while a door starts at 100 and its lock starts at 50.
Use doors as checkpoints rather than as permanent safety. The infected can gather in halls, enter rooms, and break through doors, so check the condition of the barrier before resting. If you hear pressure on a door, move medical supplies and your next weapon toward the exit, then choose whether to reinforce, relocate, or leave by another route. A locked door buys less time than a braced one, and a barricade cannot help if you have blocked your only escape.
Prepare for infected breaking through a door
This moment supports the door-defense advice by showing infected about to break through and the player preparing a Knife for the encounter.
The Hammer and Box of Screws are especially valuable in this context. A Screwdriver can work with the Box of Screws to reinforce doors and secure furniture. Do not carry a combat tool into a dangerous floor without considering whether it is also your repair kit. If the choice is between a slightly stronger weapon and the material needed to hold a retreat door, the retreat door often protects more Health than the extra damage saves.
Use routes to avoid a bad fight
Combat becomes more manageable when you choose the route before the infected surround you. The Bathroom Vent on Floor 30 is a second way out; it requires crouching, and large items such as Buckets or Boards cannot pass through it. Individual vent grilles can be removed by taking out their screws. This makes the vent useful as an escape or bypass, but not as a place to carry every heavy barricade material.
The Elevator Shaft on Floor 28 can be opened by prying the hatch when the power is out. The Handcart Route is another staff route between the basement and Floor 10, used to move heavy supplies. These routes are not confirmed as universally safe, so check the destination before committing. A route that avoids a group is valuable only if it does not leave you trapped with low Stamina and no way back.
Tools also change the shape of a fight. A Bolt Cutter can cut chain-link fences, padlocks, and wire mesh, potentially opening a route around a stairwell or room. A Screwdriver can access vents and support repairs. Carrying the right tool may prevent a fight; carrying every tool may slow or limit the trip. Choose the smallest set that opens the objective and preserves one recovery option.
Handle survivors and recovery points
Not every dangerous room is a combat objective. Survivor outcomes can change what is safe to enter and what support is available. Daniel is in Apartment 3003; bringing a Box of Screws and Screwdriver lets you repair his door or barricade, but the decision window is 120 seconds. If ignored, he becomes a zombie and attacks. Mara is in Apartment 3005 and needs food to stay alive; if ignored, she becomes a zombie, while her room contains the Janitor Toolbox Key.
These interactions create a practical combat rule: check a survivor's requirement before opening a door or starting a fight. A repair or food delivery can prevent an additional hostile encounter, while ignoring the room may turn it into one. Arthur Hale in the Floor 28 workshop can teach the proper door-repair method, including placing a board across the frame and screwing it into the studs. That knowledge supports defense rather than direct damage, but it can determine whether you need to fight during the next breach.
After an encounter, do not immediately continue because the corridor is clear. Count your remaining Stamina, check Health, apply a Bandage when needed, and make sure the next door and retreat route are usable. Recover in a secured room, but recheck the door before sleeping. If Stamina is low, take a quieter route or return to a known barrier instead of sprinting deeper into the building.
Combat limits to keep in mind
The confirmed records do not establish a complete combat victory condition, infected spawn schedule, total enemy roster, weapon durability, exact attack timing, or a precise hearing-radius formula. They also do not confirm a ranged weapon system or an accurate headshot multiplier. A spoken “headshot” description should not be used to build a ranged-combat strategy.
The most reliable combat plan is therefore conservative: preserve Stamina, keep a door or alternate route behind you, choose a weapon that still serves the trip, and treat each swing as a noise event. Fight only to create space, clear a necessary room, or reach a confirmed objective. When the objective can be reached through a vent, a cut chain, a repaired door, or a Radio decoy, avoiding the fight is usually the stronger combat decision.
Combat questions answered
What is the strongest melee weapon in 30 floors up?
The Baseball Bat has the highest listed damage at 26, followed by the Crowbar at 25. That does not make either the safest choice: the Crowbar is heavy and slow, while the Bat has wide swings. Choose based on space, speed, and whether you need another item as a tool.
How many infected can attack at once?
Up to three infected can attack at the same time. A normal hit deals 16 damage and a heavy hit deals 28, so break contact rather than standing still when several infected close in.
Can a Radio distract infected?
Yes. A Radio can be left playing as a decoy. Low volume is listed at noise 22 and high volume at 90; high volume draws attention over a wider area but also creates a stronger signal. Keep an exit open and turn it off when the diversion is no longer needed.