In Stalker 2: Heart of Chornobyl, players exploring The Zone will encounter various NPCs, triggering quests ranging 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 facilities.
Initiating the "For Science!" Side Quest
To begin, locate Yaryk Mongoose within the Central Elevator area of the Chemical Plant. Approaching the location triggers a radio conversation between Mongoose and Skif, initiating the quest. 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. A room with broken windows provides access to an external walkway and ladder leading to the silos. Equip your bolt-action weapon to counter electro anomalies. Proceed left along the silo's top to activate the measuring device.
Activating the device attracts Bloodsuckers. Choose to eliminate them or evade them to reach Mongoose.
The Confrontation with Yaryk Mongoose
Upon reaching Mongoose, he'll explain the experiment's unforeseen consequences. Players can choose to kill Mongoose for endangering Skif or accept the reward and depart. Neither choice significantly impacts the game's progression. Killing Mongoose allows looting the Malachite pass from his corpse. However, choosing the non-hostile option yields both the Malachite Pass and additional coupons. The pass grants access to the STC Malachite base, unless already accessible through main missions.
