First and foremost the art is amazing! The art and theme are perfectly matched. The game looks great and because of that it will be timeless. The gameplay is pretty much Lemmings with a few surprises that fit the zombie aesthetic. Like Lemmings you face obstacles which you have to apply the tools to. Sometimes it's not always obvious how to do that, but with experimentation you get the hang of it. The way that the game is presented, with fun intro movies and bits of dialogue that fits the B-movie framing for the game, is great! It's definitely worth checking out whether you consider yourself a strategy fan or not. There's not a lot out of games out there quite like this.
