I'd like to preface this by saying this game does have potential. It just needs a bit of fleshing out.
There isn't much substance to the game at current; it lacks any big RPG elements that keep you hooked to other games of this genre. It's just running around killing zombies and ♥♥♥♥, as if that isn't commonplace enough. So this game tries to shine in other areas.
The humor, at times, can be quite witty. The origin of the zombies is especially funny and the pre-level dialogue definitely gave me a few hearty chuckles.
However, the main character (aptly named "Dude") is often set up in situations reminiscient of third grade lunchtable comedy. You know, when you have to basically set up the scene with your words and then pantomime everything. (The sandwich level cutscene definitely shows this)
It's like saying, "Imagine I'm in a bulldozer," then acting like you crash through the wall of the teacher's lounge to create comedy. It doesn't work. It's a juvenile sense of humor that I hate.
This is especially disappointing because the maker of this game obviously has the capacity to make some funny ♥♥♥♥, the delivery is just flat-out bad. The voice acting is, to the trailer's acknowledgement, also bad, which totally killed some of the funnier parts of the cutscenes. There are a few redeeming moments, but those are sparse throughout the 100 minutes it took me to beat the story mode. If you want a really funny, cheap game, you're better off playing Dungeons of Dredmor.
The one redeeming factor of this game is its soundtrack, one of the best I've ever heard. This game's music is definitely on par with something like Hotline Miami. If, despite my reccomendation, you still buy the game, get the soundtrack with it.
If you're really willing to shell out $5 to fulfill some fetish of yours, just buy the soundtrack available on Bandcamp. It's a better use of your money than playing through this game.