Well, I laughed and oofed in about equal measure reading the various intros and tables in this.
It's simple and sweet, yet cutting and accosting. Like a candy cane that you've been sucking on, and suddenly realised you've inadvertently sharpened into a spike, where upon it is promptly driven directly into your heart. So the style gets three candy-coated bleeding black hearts of approval!
As for the system itself, its bare bones but its a good framework. The prompts are few in number, but evocative and set the style well enough to easily add your own. The mechanics are light and direct, needing little more than a handful of d6 and a post-it note for reference, so new players will find it easy to grapple with.
First time GMs may need to do a little more work, but there's an excellent examples of play section to get them up to speed (an oft omitted feature, so kudos there). I would advice any GM to pay close attention to the questions that are asked at the end should your player/s achieve lichdom. They're not an afterthought, and make up the soul of the game. So it pays to be mindful of them when weaving scenes and obstacles during play itself.
Overall this is perfect for a one-shot, and the many alternative settings at the end of book help cater to that exact usage, it is truly ripe for riffing off of and expanding (I know I will).
What has actually been delivered though is usable, funny, and more than enough to get you started without being overwhelming. Worth looking at for seasoned gamers or new starts alike, if only for the sparks of dark-humoured inspiration it will no doubt ignite!