Puzzle Spoilers
King Tumult's countersign
In the dungeon of Castle Blood Reign are messages written in blood behind shackled skeletons. Assemble all six and you get the countersign that breaks the magic seal on King Tumult's treasure chests.
Don't understand the messages? Speak them out loud. Take the first clue: "The first is 'In'." Say "In" out loud and you'll get the letter 'N' (sort of). Do this for all six clues — each gives one letter. Put them in order and you get NORTIC.
King Tumult's chests hold plenty of treasure, but the countersign isn't the only defense — breaking the seal on a chest summons a group of Sorcerers, whose spells can be devastating, especially against anyone with little Cold Resistance. Be careful.
Related area: Blood Reign Dungeon