I think this show might be best with a larger audience to help us feed off each others energy for the show's jokes. The show I went to was a little thin for audience members so laughs were a little muted and may have been a more fun romp if the laughter of others had brought the joke energy up.
The actors committed well to their roles. I particularly enjoyed the gal playing the fight coordinator - watching her, her performance just felt super natural. Sometimes some actors it feels like you're watching an actor act and sometimes you feel like you're watching someone be the character and she was definitely the latter. The male lead really committed to the bit in the second half which could have come off much campier than it did, and it worked for the tone of the show.
It's a fairly predictable script with the tropes you'd expect. I did not expect to veer off into Wicked karaoke so that felt weird. But otherwise, while there's nothing here that's going to surprise you or introduce any new ideas to the zombie genre, it was a decent little show.
So just go in knowing it's exactly what you think it's going to be and enjoy the ride.