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.
Complete all mountain quests
Complete all swamp quests
Complete all volcano quests
Finish last history chapter
Capture all darkness runemals
Complete all forest quests
Capture all light runemals
Finish swamp history chapter
Complete all beach quests
Finish mountain history chapter
Capture all fire runemals
Capture all nature runemals
Capture all water runemals
Finish volcano history chapter
Finish forest history chapter
Revive a runemal
Buy an item
Exchange crystals per coins
Heal a runemal
Finish the tutorial