Oh this game brings me back ! I absolutely love the tone you've set in the dungeon, its really lacking a good music !
The major flaw I want to tackle is that my hand was getting sore from all the clicking, would be nice to be able to hold down and have the player run in the direction of the cursor. Other than that I think some more balancing could be nice as we are definitely very weak on the earlier lives, but hey that's a nice entry given the time constraints, keep it up :)