Full list of all 12 Terraria achievements worth 200 gamerscore. It takes around 80-100 hours to unlock all of the achievements on Windows Phone.
Get the Guide to move into your house
Complete the tutorial
Get every NPC to move into your house
Reach the bottom of the World
Defeat every boss
Max out your health and mana
Defeat the Goblin Army
Kill every type of slime
Find a floating island
Obtain every type of armor available
Survive the Blood Moon
Use every crafting station