Here is the full list of all 20 WARTILE achievements worth 1,000 gamerscore. It takes around 6-8 hours to unlock all of the achievements on Xbox One.
Complete the Nilfheim Battleboard
Complete the Jotunheim Battleboard
Complete the Thor's Wrath Battleboard
Burn a tower with a figurine inside
Complete the Monastery Battleboard
Complete the Alfablod Battleboard
Buy all figurines in the game at the tavern
Complete the Rescue Battleboard
Complete the Rescue Battleboard without sounding the alarm
Complete the Trial of Tyr Battleboard
Get a figurine to level 5
Complete the Heidrun Clan Battleboard
Complete the Dark Forest Battleboard
Kill 100 enemies
Buy an item
Get a figurine to level 3
Complete the Lost Norse Battleboard
Complete the Tears of Eir Battleboard
Sell an item
Use Hex and step on the transformed frog