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 small tasks to extensive side missions like "For Science!". This mission involves Skif meeting Yaryk Mongoose, who needs help activating a second measuring device atop a silo. While brief, it rewards players with a Malachite pass, granting access to the STC Malachite facilities.

Initiating the "For Science!" Side Quest

To begin, find Yaryk Mongoose in the Central Elevator area of the Chemical Plant. Approaching this location triggers a radio call between Mongoose and Skif, prompting Skif's arrival.

Upon entering Central Elevator, go left, past the conveyor belts, and ascend the rusty stairs. Mongoose is on the first floor; vault the railing to reach and speak with him.

He'll explain the need to activate a second device on a nearby silo, requiring simultaneous activation of both. Accepting his request starts the "For Science!" mission.

Reaching the Silo's Summit

Leave the room and climb to the building's roof. Eliminate any rodents encountered. A room with broken windows allows access to an external walkway and ladder leading to the silos.

Jump to the connecting walkway and proceed to the silo, equipping your bolt gun to counter electro anomalies. Head left along the silo's top to activate the measuring device.

Activation alerts a Bloodsucker pack. Choose to fight or evade them to reach Mongoose.

Confronting Yaryk Mongoose

Mongoose will explain the experiment's unintended consequences. Players can choose to kill him for endangering Skif or accept the reward and leave. Neither choice impacts the game significantly. Killing him allows looting the Malachite pass from his corpse.

However, choosing the peaceful option provides the Malachite Pass and some coupons. This pass unlocks access to the STC Malachite base, unless already accessible through main missions.