I am truly impressed by what you have achieved in just 50 hours! I'm personally not a big fan of pixel art, but the style really suits the game.
The game itself is really difficult, or maybe I just suck? Took me really long to actually figure out I can attack enemies, but I am still not sure how the attack works..
One thing I would change is that as a player I would like that the game prevents me from using a skill if that action is going to kill me. Often times I was not sure it was an enemy who killed me or my own skill. That was quite confusing and frustrating, especially since it's impossible to tell how much HP I currently had left...
But anyway, really great game! Thanks for participating in our jam!