In Stalker 2: Heart of Chornobyl, players will encounter numerous NPCs during their exploration of The Zone, leading to various quests, including the "For Science!" side mission. This mission begins with Skif meeting Yaryk Mongoose at the Central Elevator in the Chemical Plant. Mongoose will request Skif activate a second measuring device atop a silo. This relatively short quest rewards players with a Malachite pass, granting access to the STC Malachite facility.
Initiating the "For Science!" Quest:
To begin, locate Yaryk Mongoose within the Central Elevator area of the Chemical Plant. Upon approaching, Mongoose will contact Skif via radio, prompting a meeting. Head left past the conveyor belts, ascend the rusted stairs, and vault the railing to reach Mongoose on the first floor. He'll explain the need to activate a second device and initiate the quest upon accepting his request.
Reaching the Silo's Summit:
Exit the room and climb to the building's roof. Eliminate any rodents encountered. Climb through a broken window and descend the external ladder to reach 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 will attract Bloodsuckers. Players can choose to fight or evade them.
Confronting Yaryk Mongoose:
Return to Mongoose. He'll explain the experiment's unintended consequences. Players can choose to kill Mongoose or accept the reward peacefully. Both options have no significant long-term impact. Choosing the peaceful option yields the Malachite Pass and coupons. The pass allows access to the STC Malachite base, unless already accessible via main missions.
