First of all, thank you for giving our game a try!
We're looking into changing the sprites to make the game more readable and, later, we will try to improve balancing. As for the randomness, it turned out to be a single line of code: The whole game is procedurally generated but the seed was not changing correctly; you can expect a new build with bugfixes in the next few days, while major updates and graphical reworks will take longer.
Thank you for your support :3