At Sundown achievements

Win a game with a triple kill at the end

Win a game where no other players get a kill

Play an Unranked online match

Win an Online match (Ranked or Unranked)

Play a match where you use 5 different weapons

Complete a Training Challenge

Kill someone on a killing spree and get a killing spree yourself

Play a game type other than Deathmatch, Timed, or Timed Deathmatch

Play your first match

Kill someone on a killing spree

Get 10 kills on all weapons, including unlockable ones

Win 100 games