The A.V. Club's Kevin McFarland gave the episode a "B-" grade and wrote, "It's helpful to remember that two of "Grimm"s creators, David Greenwalt and Jim Kouf, worked on Buffy and Angel, two shows that had a soft spot for two-part television stories within a standard season. 'The Kiss' is the second half of a two-part story, and it instills a little more faith that despite some serious rocky patches, "Grimm" has a vague idea of where it's going. It may not always deal directly with the overarching mythology — one of the writers confirmed via Twitter that the case-of-the-week structure is returning — but it can stretch out a story over two weeks and make it reasonably interesting." Nick McHatton from "TV Fanatic", gave a 4.5 star rating out of 5, stating: "It's too bad NBC didn't premiere "Grimm" with back-to-back episodes. Because 'The Kiss' kicked off right where 'Bad Teeth' concluded. But, when you're premiering in August and only have so many episodes to go around, this is the result. Still, no complaints are needed." Josie Campbell from "TV.com" wrote, "Renard enlightenment aside, the episode was also fun. Monroe and Rosalee's nervous interactions with Mama Nick were a blast and Monroe was pretty adorable in his insistence that he would have killed HexenMom for insulting Rosalee (yes, I know I just described a death threat as adorable. This is "Grimm")."