How to Cure Infection in No More Room in Hell 2

You cure infection in No More Room in Hell 2 in one of three reliable ways: use Phalanx Pills to delay the infection, find the extremely rare Experimental Gene Therapy Cure for full session immunity, or extract while infected so the infection is removed before the next deployment. There is also a last-resort option: press K to commit suicide when infected and armed with ammunition, preventing your corpse from turning and chasing teammates. Before treating anything, learn how infection starts and recognize its four stages, because wasting pills too early can leave you helpless later.

How You Get Infected

The first infection source is a zombie grab. When grabbed, you enter a button-mashing minigame; failing it results in a bite and infection. Low stamina makes this minigame harder, and if your stamina is below 15% you are especially vulnerable to being bitten. Managing stamina is therefore part of infection prevention, not just movement or melee efficiency.

The second source is damage while wounded. At 50% health or lower, any zombie attack can infect you. The lower your health, the higher the infection risk from attacks, according to the Fandom mechanics reference. This means you should heal after taking damage rather than continuing to fight at low health just because you are still standing.

The third source is toxic contamination. You can be infected by stepping into gas from a dead Shambler corpse or by being hit by a gas-carrying zombie. This source has a high infection chance, so do not walk through Shambler death clouds and prioritize killing gas zombies before they reach you.

Infection Stage 1

The first stage of infection begins with a migraine aura. Visually, you will see white lines around the edges of the screen, accompanied by mild visual distortion and blurred edges. This is the earliest warning that something has gone wrong, and it is easy to miss during a chaotic fight.

At this stage, treatment is usually not urgent if extraction is close. Phalanx Pills are best saved for later because the infection has not yet reached the lethal final stage. Call out your infection status to your squad, start planning a route to extraction, and avoid taking additional risks that could get you grabbed or surrounded.

Infection Stage 2

The second stage adds audio distortion. Sounds begin to echo or sound wrong, and your Responder starts coughing. The cough is audible to nearby teammates, which can make stealth harder and tells the squad that you are infected.

This is a good time to confirm whether any teammate has pills or gene therapy. If the team still has major objectives to complete, consider saving medication until the final stage. If extraction is already available, moving toward the exit is usually better than spending limited medical supplies.

Infection Stage 3

The third stage introduces hallucinated audio. You may hear whispers such as "We'll see you soon" or other false sounds, and the coughing becomes more severe. These sounds are not real squad or zombie cues, so avoid reacting to every noise as if it were a threat.

At this point the infection is becoming dangerous. If Phalanx Pills are available, prepare to use them before the final visual sign appears. If no cure exists, the team should prioritize extraction over optional loot or objectives. Gene therapy can still completely solve the infection if found, but it is extremely rare.

Infection Stage 4

The fourth and final stage is marked by vein patterns appearing along the edges of your vision. This is the lethal warning: if you do not treat the infection, your Responder will die. This is the stage where using Phalanx Pills is generally recommended because it buys the most remaining time per charge.

If you have the Experimental Gene Therapy Cure, stage 4 is still treatable before death. If you have no medication and extraction is impossible, the K-key suicide option is worth considering. It prevents the infected Responder from becoming a zombie threat to teammates and causes carried loot to drop where teammates can recover it.

Phalanx Pills

Phalanx Pills are the semi-common infection treatment. Each bottle contains three uses. They do not grant permanent immunity; they push the infection back and buy time for you to finish objectives or reach extraction.

The practical rule is to avoid taking them at stage 1 unless you know the run will be long. Waiting until the final stage, when vein patterns appear, gets the most value from each bottle. Share pill status with your squad so you do not waste multiple players' doses on one infection that could be solved by extracting.

Experimental Gene Therapy Cure

The Experimental Gene Therapy Cure is extremely rare and single-use. It is the only item that both cures the current infection and grants complete immunity for the rest of the session. The process uses an injection gun: first you draw blood, a progress bar shows antibody creation, and once the indicator turns green you inject again to complete the cure.

Because it is so rare, gene therapy is best saved for a high-stakes run, a Nightmare difficulty attempt, or a moment when the squad cannot extract quickly. It is stronger than Phalanx Pills because it removes the infection entirely rather than delaying it. Do not expect to find it in every run.

Extraction Cures Infection

Extracting while infected cures your Responder. Infection does not carry over into the next deployment if you reach extraction alive. This is why communicating infection status and pushing for extraction is often the best treatment, especially when pills are unavailable.

For Objective mode, finish the required objectives and reach the extraction point. For Survival mode, survive the required waves and board the helicopter extraction, or take the early extraction if your squad has failed enough waves. The result is the same: an infected Responder who extracts returns uninfected.

Last Resort: Suicide

If you are infected, have no medication, cannot extract, and still have ammunition, you can press K to commit suicide. This is not a treatment in the normal sense, but it prevents your dead Responder from turning into a zombie that pursues teammates. It also drops your loot so surviving squad members can recover useful supplies.

Only use this option when the run is hopeless. If there is any realistic chance of reaching extraction, staying alive and attempting to extract is better because a successful extraction cures the infection and keeps your Responder.

How to Prevent Infection

Prevention comes down to the three infection sources. Keep stamina above 15% whenever possible so grab minigames are not unnecessarily difficult. Heal before continuing to fight at low health, because attacks at or below 50% health can infect you.

Avoid Shambler corpse gas and gas zombies when possible, and call out infected teammates so the squad can plan around pills or extraction. A quiet, disciplined team that avoids unnecessary grabs will see infection far less often than a squad that overextends, runs out of stamina, and fights every horde at low health.