Well...Maybe One or Two

Well...Maybe One or Two is an achievement in Halo: The Master Chief Collection. This achievement is obtained when a player kills 25 Engineers in Halo 3: ODST or Halo: Reach. 
==Trivia==
*The title of the achievement is a reference to Edward Buck saying "Well... maybe one or two" whilst responding to Veronica Dare when he asks if he has killed Engineers during the level Data Hive.