How to complete Outstanding Balance in Arc Raiders

Venturing into Blue Gate's Traffic Tunnel is a dangerous prospect, what with all the raiders and robots about, but that's exactly what Outstanding Balance asks you to do. This is one of the new quests in Arc Raiders' Flashpoint update, and it sees Tian Wen trying to recover her lost Bastion Cell from a raider named Dodger.

So, you need to find Dodger's stash inside the tunnel. But, surprise, surprise, there's more to it than that, and you must complete all the steps in a single round. Here's...