Full list of all 20 Runemals achievements worth 200 gamerscore. It takes around 25-30 hours to unlock all of the achievements on Windows Phone.
Capture all darkness runemals
Complete all volcano quests
Complete all swamp quests
Complete all mountain quests
Finish last history chapter
Complete all forest quests
Complete all beach quests
Finish swamp history chapter
Capture all light runemals
Capture all fire runemals
Capture all nature runemals
Finish mountain history chapter
Capture all water runemals
Finish volcano history chapter
Finish forest history chapter
Revive a runemal
Exchange crystals per coins
Heal a runemal
Buy an item
Finish the tutorial