(Image credit: Embark) Shoring Up Defenses is one of the three starting quests in Arc Raiders ' Riven Tides update. It's all about reinforcing key locations across the beach-based map and clearing out the robots that have moved in. And just for accepting the quest, Apollo will give you a Dockmaster's Detector, which you can use in the Beachcombing map condition to find buried treasure. Below, I'll explain where you need to go to complete this quest as quickly as possible. Take note that you'll need one Arc Alloy for this mission, though you should be able to grab one during a run, given you'll also be killing Wasps and Fireflies.…