Primate is an achievement in Halo: The Master Chief Collection. This achievement is obtained when a player finds any of the three different "missing links" on the level Sierra 117. This can either be:

  • the missing link found at one of the threes at the other side of the river, when first encountering it.
  • The group of three Cavemen.
  • The single caveman at the end of the level.

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