0 0 0Complete achievement/Collectible guide for DLC : The Signal:This is 100% complete guide to all achievement/collectibles and full game. Timestamps are in comment on YouTube:
0 0 0This is part of The Signal DLC.The basement will be filled with furnaces that have the word "blast" around them. Shine the Flashlight to make each furnace blast. The achievement will unlock when you blast the last furnace.