Stalker 2: For Science! Side Quest Walkthrough

In Stalker 2: Heart of Chornobyl, players exploring The Zone will encounter numerous NPCs, triggering various quests, from minor tasks to substantial side missions like "For Science!". This mission involves Skif meeting Yaryk Mongoose, who needs help activating a second measuring device atop a silo. While short, it rewards players with a Malachite pass, granting access to the STC Malachite facility.

Initiating the "For Science!" Side Quest

To begin, locate Yaryk Mongoose within the Central Elevator area of the Chemical Plant. Approaching this location triggers a radio call between Mongoose and Skif, prompting Skif's arrival. Inside the Central Elevator, bypass the conveyor belts, ascend the rusted stairs, vault the railing, and speak with Mongoose on the first floor. He'll explain the need to activate a second device on a nearby silo. Accepting his request starts the "For Science!" mission.

Reaching the Silo's Summit

Exit the room and climb to the building's roof. Dispatch any rodents encountered. Access the exterior via a broken window, descend the ladder, and traverse the walkways to the silos. Equip your bolt-action weapon to counter electro anomalies. Proceed left along the silo's top to activate the device.

Activating the device attracts Bloodsuckers. Players can either eliminate them or evade them to reach Mongoose.

The Confrontation with Yaryk Mongoose

Upon reaching Mongoose, he'll explain the experiment's unintended consequences. Players can choose to kill Mongoose for endangering Skif or accept the reward peacefully. Neither choice significantly impacts the game's progression. Killing Mongoose allows looting the Malachite pass from his corpse. However, choosing the peaceful option provides both the Malachite Pass and additional coupons. The pass unlocks the STC Malachite base, unless already accessible via the main storyline.