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Halloween: Enemy of My Enemy - An Agreement

Temporary quest: active now, part of an event. “Halloween: Enemy of My Enemy - An Agreement” is a Therapist task in Escape from Tarkov. Reward: 18,000 XP. Objectives: Hand over the clues; (Optional) Obtain the virus clue. Walkthrough, map and requirements.

Event: Halloween 2026 · 29 October 2026

Therapist — briefing

Hello. I have already been informed that Skier wishes to get in touch again. To be frank, after everything that has happened, I wasn't particularly eager to speak with him. However, if he really has information about the origin of the outbreak and what caused it, I'm willing to examine it. Bring me everything you've managed to find. If the information proves significant enough to support his claims, I'll try to put our previous conflict behind us.

Objectives

• Hand over the clues
• (Optional) Obtain the virus clue

Tactical notes

• WHERE TO GO: no raid needed. Unlocks once Enemy of My Enemy is accepted from Skier; give Therapist the folder he handed you.
• The reward unlocks barters for RDA-78, the Mk-18, the PKP and more at five traders.
• A Halloween 2026 event task: available while the event lasts.

On completion

Therapist: I've reviewed the materials. They confirm what was already becoming clear. Skier was certainly deceived, although he would do well to reflect on his own conduct. For now, however, working with him is the more practical option. I've managed to develop a working vaccine, but producing it requires far too many resources. For the time being, I can only manufacture limited batches alongside the prototype. It's too early to lift the quarantine. There won't be enough doses for everyone.

Data

• Trader: Therapist
• EXP: +18,000
• Objectives: 2
• Kappa: No

Quest chain

• Previous task: Halloween: Coincidence? (Skier)
• Unlocks once this task is accepted: Halloween: Enemy of My Enemy (Skier)

More from this trader

Therapist

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

Rewards

• +18,000 EXP
• 150,000 Roubles
• 1× RDA-78 vaccine (Replicative DNA Attenuator)
• 2× TG-Vi-24 vaccine prototype (B.1.2 strain)
• Unlocks barter for RDA-78 vaccine (Replicative DNA Attenuator) at Therapist LL1
• Unlocks barter for SWORD International Mk-18 .338 LM marksman rifle at Jaeger LL1
• Unlocks barter for T-7 Thermal Goggles with a Night Vision mount at Jaeger LL2
• Unlocks barter for Kalashnikov PKP 7.62x54R infantry machine gun at Prapor LL1
• Unlocks barter for RB-BK marked key at Prapor LL2
• Unlocks barter for Trijicon REAP-IR thermal scope at Skier LL1
• Unlocks barter for Weapon case at Skier LL2
• Unlocks barter for BNTI Zhuk body armor (EMR) at Ragman LL1
• Unlocks barter for Milkor M32A1 MSGL 40mm grenade launcher at Peacekeeper LL1
• Unlocks barter for T H I C C item case at Peacekeeper LL2