As players make their way through Dredge's most recent DLC, "The Iron Rig," they will unlock and upgrade a variety of facilities on the platform. Each new building will offer several new and improved items and abilities for your boat. When given this task in the game, many players will likely wonder which buildings they should upgrade first in The Iron Rig DLC. This guide will explain how upgrades work in Dredge's 'The Iron Rig' DLC, and provide players with a full list of requirements.