The concept of the languages is pretty original and interesting. It is what sets this game apart. I got to say however, that the encounter rate is far too high and the maps in general feel a little barebones. While I liked the party you get, the enemies themselves don't seem all that varied, with pretty much all of them only using the basic attack
Keep working on integrating the language concept as well as the norse mythology, rework the maps, add more interesting enemies and you will end up with a very solid and unique game!