Here is the full list of all 124 Time Break Chronicles achievements.
Defeat the CENCOM boss.
Defeat the King Terror boss.
Defeat the Devastator boss.
Complete 3 quests for all Act 3 heroes in Chronicle Mode.
Complete 3 quests for all Act 4 heroes in Chronicle Mode.
Win a Singularity Mode run at Difficulty 15.
Defeat the Sin boss.
Complete 3 quests for all Act 1 heroes in Chronicle Mode.
Complete 3 quests for all Act 2 heroes in Chronicle Mode.
Win a Singularity Mode run at Difficulty 10.
Defeat the Hell Pit boss.
Defeat the Magma Beast boss.
Defeat the Fate Weaver boss.
Build the Nano Lab Facility in your town.
Win a Singularity Mode run at Difficulty 5.
Defeat the Forest Heart boss.
Defeat the King Shroom boss.
Defeat the Shredder boss.
Defeat the Kraken boss.
Rescue Chuckles the Clown.
Rescue Javed the Immortal.
Defeat the Living Snow boss.
Have a hero be consumed by a Death Worm.
Rescue Maximus the Blacksmith.
Rescue Yukiko the Assassin.
Rescue Paul the Linebacker.
Rescue Jack the Pirate.
Rescue Ambroise the Plague Doctor.
Build the Forge in your town.
Rescue Darius the Marine.
Rescue Carlos the Super Soldier.
Rescue Cain the Maelstrom.
Rescue Buzzard the Raider.
Rescue MU-21 the Med Bot.
Craft a relic.
Rescue Elgeon the Ice Mage.
Defeat the Spirit Well boss.
Rescue Drax the Cursed.
Rescue Odrak the Barbarian.
Rescue Kiara the Banshee.
Rescue Vikki the Vul.
Rescue Caleb the Dark Knight.
Rescue Jed the Pioneer.
Defeat the Rock Beast boss.
Rescue Brand the Cleric.
Rescue Thorg the Viking.
Win a run in Singularity Mode.
Rescue Sovras the Necromancer.
Rescue Og the Caveman.
Rescue Ishikawa the Ninja.
Build the Research Lab in your town.
Defeat the Cursed Mirror boss.
Rescue Korr the Sasquatch.
Rescue George the General.
Defeat the Mutant Twins boss.
Rescue Big Dan the Biker.
Rescue Rafael the Sentinel.
Bind a relic to a hero.
Defeat the Venom Queen boss.
Rescue Slade the Rocker.
Rescue Seth the Lizardman.
Train a skill.
Defeat the Big Blob boss.
Rescue Amenemhet the Jackal Priest.
Defeat the Broodmother boss.
Rescue Harry the Medic
Rescue Samuel the Lawbringer.
Complete the tutorial.
Defeat Xendros.
Complete 3 quests for all Act 5 heroes in Chronicle Mode.