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