Snowgrave is one of the names used for the Weird Route, which is also known as Pipis Route, Command Route or Genocide Route, in the
video game Deltarune Chapter 2. The route is most commonly known as the Snowgrave route because the way to lock in that you are on this route is by fully unlocking and using the move "snowgrave" in a battle, which is a fatal attack used by the character Noelle. The steps to unlock the move, and lock your game file into the weird route, require careful planning and purposeful intent, making it very referential in nature.
Once Kris gets to Noelle and has her join their party, they must defeat every enemy between Spamton's shop in the Junkyard and the second puzzle by using Noelle's IceShock spell to freeze the enemies. Do not drive off any enemies using melee attacks or sparing as this will
immediately end the route. When all enemies in a room are frozen, (and at other key points in the run) an ominous blippy sound plays that goes down in pitch.