Here is the full list of all 52 LORT achievements.
The base game contains 36 achievements, and there are 2 DLC packs containing 16 achievements.
Complete a run on Normal difficulty. Fantastic!
Defeat the boss in Hilly Billy Countryside on Hard.
Defeat the boss in Funkwood Hollow on Hard.
Defeat the boss in Trollhole Summit on Hard.
Defeat the boss in Bonezone Basin on Hard.
Defeat the Curse of LORT on Hard.
Complete a Hard run as Astrid Glitzgore.
Complete a Hard run as Cliff Bowman.
Complete a Hard run as Bernie Blazington.
Complete a Hard run as Croaks Malone.