Full list of all 39 Battle Worlds: Kronos achievements worth 1,000 gamerscore. It takes around 40-50 hours to unlock all of the achievements on Xbox One.
Complete mission 1, "Search & Rescue".
Complete all secondary goals in mission 1, "Search & Rescue".
Complete mission 1, "Search & Rescue", without requesting reinforcements.
Complete mission 2, "Scorched Earth".
Complete all secondary goals in mission 2, "Scorched Earth".
Complete mission 2, "Scorched Earth", without requesting reinforcements.
Complete mission 3, "Retaliation".
Complete all secondary goals in mission 3, "Retaliation".
Complete mission 3, "Retaliation", without requesting reinforcements.
Complete mission 4, "Preparations".
Complete all secondary goals in mission 4, "Preparations".
Complete mission 4, "Preparations", without requesting reinforcements.
Complete mission 5, "Coast of Fate".
Complete all secondary goals in mission 5, "Coast of Fate".
Complete mission 5, "Coast of Fate", without requesting reinforcements.
Complete mission 6, "The Base".
Complete all secondary goals in mission 6, "The Base".
Complete mission 6, "The Base", without requesting reinforcements.
Complete mission 7, "The Bomb".
Complete all secondary goals in mission 7, "The Bomb".
Complete mission 7, "The Bomb", without requesting reinforcements.
Complete mission 8, "Last Stand".
Complete all secondary goals in mission 8, "Last Stand".
Complete mission 8, "Last Stand", without requesting reinforcements.
Complete mission 9, "Old Man River".
Complete all secondary goals in mission 9, "Old Man River".
Complete mission 9, "Old Man River", without requesting reinforcements.
Complete mission 10, "A Single Soul".
Complete all secondary goals in mission 10, "A Single Soul".
Complete mission 10, "A Single Soul", without requesting reinforcements.
Complete mission 11, "The Temple".
Complete all secondary goals in mission 11, "The Temple".
Complete mission 11, "The Temple", without requesting reinforcements.
Complete mission 12, "Battle for the Future".
Complete all secondary goals in mission 12, "Battle for the Future".
Complete mission 12, "Battle for the Future", without requesting reinforcements.
Complete mission 13, "The Turn of Tides".
Complete all secondary goals in mission 13, "The Turn of Tides".
Complete mission 13, "The Turn of Tides", without requesting reinforcements.