Here is the full list of all 19 Bartlow's Dread Machine achievements.
Get through a entire level without taking any damage.
Unlock all Agents
Defeat Werewolf McKinley
Fly an Airship.
Rescue President Roosevelt
Defeat the Leviathan
Captain a ship
Defeat the Waterfront Riot
Have a hat, coat, and pants equipped at the same time
Defeat the Orm God
Deflect 10 shots in a single level.
Drive a car.
Defeat the Station Master
Complete a level with 80% of your shots hitting enemies.
Lose all lives in a level
Puchase any weapon
Pick up health during a level
Refill ammunition during a level
Unlock all hats at the Outfitter