Dragon Age: The Veilguard

In order to unlock the ‘Across the Imperial Highway’ achievement in The Veilguard, you not only need to visit every area (below), but you also need to step foot in every district too i.e. the Grey Hold at the Hossberg Wetlands all the way to Wharf Crossing South in Dock Town.

While this might sound daunting, as long as you do all the main quests, side quests and companion quests, you’ll absolutely get this without breaking too much of a sweat - especially if you’re going for all the achievements (like the one for all the Altars of the Evanuri and Fen’Harel Altars - i.e. No Real Gods (25G)) while simultaneously trying to get most of the chests. If that’s your approach you’ll get this without any additional effort.

The locations you need to discover all the districts are as follows:

The Fade

• Lighthouse
• Crossroads

Tevinter

• Dock Town (Minrathous)

Arlathan

• Arlathan Forest
• Arlathan Crater

Antiva

• Treviso

Rivain

• Rivain Coast
• The Hall of Valor

Anderfels

• High Anderfels
• Hossberg Wetlands
• Deep Roads
• Isana Nagat
• Weisshaupt

Nevarra

• Necropolis Halls
• Blackthorne Manor

So, visit all of those areas and visit all the districts within them and this achievement will unlock before you get into the endgame and beyond (i.e. the end of chapter 11, all the way through to the end of chapter 14, which don't count for this achievement).