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