Here is the full list of all 24 Legend of Keepers: Career of a Dungeon Manager achievements.
Kill 3 heroes simultaneously with a trap.
Reach 260 weeks in Endless Mode.
Apply 20 stacks of "Bleeding" to a single hero.
Steal 10 Artefacts from the Collector.
Reach 156 weeks in Endless Mode.
Complete level 20 of Ascension Mode with any Master.
Complete level 15 of Ascension Mode with any Master.
Kill 3 heroes with a single attack.
Unlock 45 Artefacts at the Archivist.
Complete level 10 of Ascension Mode with any Master.
Summon 10 monsters in front of the Ninth Door.
Complete level 5 of Ascension Mode with any Master.
Complete all missions with the Engineer.
Recruit 5 rare monsters with the Headhunter.
Complete all missions with the Enchantress.
Unlock 35 Artefacts at the Archivist.
Use only the same type of monsters during a dungeon.
Finish a game without seeing the Therapist.
Complete all missions with the Slaveholder.
Gather 5 Artefacts during a game.
Upgrade a monster to max level.
Kill a Champion.
Make 3 heroes flee.
Unlock 25 Artefacts at the Archivist.