Not much to say here. A simple topdown-shooter. I know the most interesting mechanic is supposed to be the random stat-changes, but the only indicator is that small bar and the text, telling you what change has occured but I have no idea what the current state of the game is.
I think it would be more obvious, if instead of just saying what changed, display what the current game-stats are (like Zombie-speed etc) preferably as easy to read Bars. That way the player can easily follow, how the current state of the game is without changing the actual gameplay.
And i feel like there isn't much room for improvisation for the player. The game basically just has a randomly changing difficulty-slider. But I can imagine that this issue mostly comes from lack of time (as is often the case for Game-Jams)