See it if you would like to see a stand-up routine with sharp musical accompaniment take on the oldest of English language classics.
Don't see it if you are expecting fidelity to the source text.
See it if You enjoy modern takes on classic tales. You like shows w/small production values. You have some familiarity w/Beowulf.
Don't see it if You want a consistent style: it varies between serious, which works, & a silly, nightclub vibe, which doesn't. You prefer big productions.
See it if You loved or hated Beowulf in high school, and you appreciate a fun fast-paced take on the story - also if you like Monty Python style humor
Don't see it if You hate solo shows or British accents.