Once you've fallen down into the builing from the crane, make your way down three floors, then go into the bathroom and walk across the beam to find this weapon by a body. This Weapon is extreamly useful against Bloaters and Shambler's, as they're weak to fire.
Join Ellie and Dina, as they have to overcome difficult puzzles and encounters whilst traveling through Seattle. During this adventure you'll be able to find Artefacts for interesting backstory, Trading Cards for Ellie to collect, and Weapons to make the more difficult encounters easier.
The guide for The Last of Us: Part II will include all there is to see and do including a walkthrough featuring how to take down all encounters, locate all Collectibles/Weapons, and how to solve all puzzles.