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