In anthem there are a total of 80 Runes (50 for the Vassa’s Triumph Challenge, 20 for the Footsteps of Idris Challenge & 10 For the Hidden Messages). For some reason some runes that are footsteps for me may be Hidden Messages for you or even Runes for the Vassa Challenge, however all the runes will be in the exact same place, so just watch all 3 videos to get all 80! You will only be able to see these runes after you finish the main quest “See in the dark”.