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