What if it was changed so that you are instead turned into a shadow from Fight or Fright? You would get the effects of speed and infinite climb. Idk about the wall running and double jump though because the devs said they didn't want it in the main game. Of course to go along with this change, you would not have access to your weapons and would have to use your fists. Instead of having 100 health, it could be bumped down to maybe 50.
This is just something I always wanted for Revenant's totem, because it bugs me that it is supposedly the same technology but you don't have the same abilities as a shadow. This would make it more versatile too because you can also use it as an escape. This would also be a fun way to keep the gameplay as a shadow without having to wait a whole year to play as them at Halloween.
