The attack is extremely unreliable - most of the time when I pressed the button nothing happened, which made it really annoying to use, especially since it's a short range one, meaning that you have to also be in the enemy's range to use it.
But that's something that can be fixed with an update or two. And the game definitely has potential, though it could use either more variety in how the rooms look, or a map. As it is now, it's hard to tell if you've already visited a given location, or not yet.