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Halloween: A New Vaccine

Temporary quest: active now, part of an event. “Halloween: A New Vaccine” is a Therapist task in Escape from Tarkov. Reward: 41,000 XP. Objectives: Skier's line: Survive and extract from Infected Factory; Skier's line: Survive and extract from Infected Lab. Walkthrough, map and requirements.

Event: Halloween 2026 · 29 October 2026

Therapist — briefing

If you stashed the shipment for Skier: Hello. I've received the results of the analysis of Skier's chemical. Yes, the very same one you helped him distribute all over Tarkov. I had to buy it back at extortionate prices through intermediaries. You owe me for that, young man. Back to the matter at hand: it isn't a vaccine. Its composition was designed to accelerate the mutation of an existing strain. As a result, the disease now progresses faster, the infected are more aggressive, and our previous methods of suppression are becoming less effective. If you decide to stay with me, you'll need to work directly in the infected areas. I need people who can enter both the infected Factory and Laboratory, assess the situation and make it back out alive. First, we'll establish exactly what we're dealing with. Only then can we look for a way to stop it. If you gave it to Therapist: Hello. I've received the results of the analysis of Skier's chemical. It isn't a vaccine. Its composition was designed to accelerate the mutation of an existing strain. As a result, the disease now progresses faster, the infected are more aggressive, and our previous methods of suppression are becoming less effective. If you decide to stay with me, you'll need to work directly in the infected areas. I need people who can enter Infected Factory or the Laboratory, assess the situation and make it back out alive. First, we'll establish exactly what we're dealing with. Only then can we look for a way to stop it.

Objectives

• Skier's line: Survive and extract from Infected Factory
• Skier's line: Survive and extract from Infected Lab
• Skier's line: (Optional) Obtain the special item to use the exfil
• Skier's line: Hand over 2,000 USD
• Therapist's line: Survive and extract from Infected Factory or Infected Lab

Tactical notes

• WHERE TO GO: Infected Factory and Infected Lab. The terms depend on the first fork: if you stashed the shipment for Skier, survive both locations and hand over 2,000 USD; if you gave it to Therapist, survive either one.
• The Lab can only be left with Car keys or the Collector map.
• FORK: completing Tightening the Quarantine (Skier) fails A New Vaccine (Therapist), and vice versa. Each line then runs to its own finale: Blind the Enemy and the Shields Up! achievement for Skier, The Final Push and Triumph of Science for Therapist.
• A Halloween 2026 event task: available while the event lasts.

On completion

Therapist: You've chosen the side of the reasonable people, young man.

Data

• Where it happens: Infected Factory, Infected Lab
• Trader: Therapist
• EXP: +41,000
• Objectives: 5
• Kappa: No

Quest chain

• Any one of 2 tasks is required: Halloween: Unexpected Help (Skier)
• Any one of 2 tasks is required: Halloween: Initial Examination (Therapist)
• Next task: Halloween: High-Risk, High-Reward (Therapist)

More from this trader

Therapist

• Drug Trafficking
• Unanswered Calls
• Fall Ailment
• Invasive Therapy
• Shortage (lvl 1)
• A Healthy Alternative (lvl 1)

Rewards

• +41,000 EXP
• 300,000 Roubles (Skier's line)
• 1× Mr. Holodilnick thermal bag (Skier's line)
• 150,000 Roubles (Therapist's line)
• 2× TerraGroup Labs access keycard (Therapist's line)
• 2× Surv12 field surgical kit (Therapist's line)