Here is the full list of all 12 Windscape achievements.
Find the desert temple.
Travel to Maaki Desert.
Enter the Crypt deep under the Graveyard.
Enter the spooky graveyard.
Enter the Mines on Evergreen Island
Find Walters Watermill.
Craft 5 items at the different Workstations.
Cut down 5 trees.
Complete 3 quests.
Enter Sky Harbor.
Defeat 5 enemies.
Gather 10 resources.