Tales of Vesperia
50 Achievements
1,000
120-150h
Map Nerd
You have traveled the farthest reaches of the world. Did you find what you were searching for?
50
How to unlock the Map Nerd achievement in Tales of Vesperia - Definitive Guide
If the achievement does not unlock, and it looks like all the cloudy parts are off the map, go up and down the maps in lines, and you will hit the spot you are missing.
Also use a wired controller so the battery doesn't run out and wrap the cable around the analog stick so it flies by itself.
I couldn't find which spots I was missing on the map, so I held the control stick north-east for about 5 minutes and the achievement unlocked.
As you travel the world you will gradually uncover more of the map. Hit Y, then select "Library" and finally "World Map" to see your progress. Look around for spots that are still beige and head there to uncover them. Very easy once you get Ba'ul. You will most likely be missing some small speck that you can't see with your naked eye, so once you do your initial sweep when you get Ba'ul, if you don't have the achievement just ignore it and finish playing the game. You ride him often going from city to city so you'll probably hit that last spot randomly somtime. If you don't get it before you finish the game for some reason, be sure to spend 300 in the Grade Shop to carry your map over.