0 0 0Spend at least 13 minutes (can be more time) in a Red Sigil puzzle actively moving about inside of the chamber.The achievement is awarded upon solving the puzzle.Note: It may not be possible to unlock this on the very first Red Sigil chamber 'An Escalating Problem' in world A-3. I was able to unlock this in the second accessible Red Sigil chamber 'Friendly Crossfire' in world A-5 which requires the box to be unlocked in order to be solvable.