In no particular order
- p. 47 Sea Reek (Hafgufa) statblock, the Legendary creature line is formatted inconsistently from the other Legendaries.
- p. 37 Muspelhound statblock, the phrase "may spontaneously appear near lava floes" is a non-standard usage of floe, and would be better replaced with lave flow. Floe does—coincidentally?—have its roots in Old Norse, but it has no relation to the word flow and the only usage I'm aware of is in reference to long, flat masses of floating ice.
- p. 36 Mirth (Hamingja) statblock, the phrase "Sorrow: sings to the dreams in slumber" is awkward phrasing.
- p. 22 Dragon of the Mists (Dreki) statblock, "Poison breath: Emits green cloud" should be "Emits a green cloud"
- On pages 1 (title & copyright page), 8, 9 (twice), 15, 28, 51, & 54 a right single quotation mark ’ is incorrectly used in place of an apostrophe '
- p. 28 Hidden Folk (Huldra) statblock, travellers is misspelled "travllers"