All I have for you is a gesture, in combination with a word: "Tenet." Use it carefully. It'll open the right doors, but some of the wrong ones, too.
Puzzles solved: 0
Edge of Tomorrow, Donnie Darko, Primer, Looper, Source Code, Palm Springs, Happy Death Day, The Butterfly Effect, Déjà Vu, Puella Magi Madoka Magica: The Movie