Top of the Line

Overview

Top of the Line is an Onslaught triumph for upgrading defenses. It awards 20 Triumph score across four milestones.

How to complete

Earn Scrap by defeating combatants and completing bonus objectives during Onslaught. During a building interval, approach a defense location around the Advanced Defense Unit and purchase a Turret, Tripmine or Decoy. Return to the purchased defense and spend more Scrap on its upgrade prompt.

Repeat upgrades across runs to advance the triumph's stages. Plan purchases around the building intervals at the start of a set and after its third and sixth waves. Keep enough Scrap for an upgrade rather than spending everything on new basic defenses, and defend the positions while the next waves arrive.

Upgrading a purchased defense is the relevant action; throwing a battery to repair a damaged defense or the Advanced Defense Unit serves a different purpose.