Here is the full list of all 15 Devolver Bootleg achievements.
Beat the Boss in Enter the Dungeon
Beat Hotline Milwaukee
Acquire 10,000 currency across all games.
Play as the frog in PikuBiku Ball Stars
Kill 100 frogs across all games.
Take damage in Catsylvania
Open the System Menu 1000 times.
Try to enter a cheat code.
Open the System Menu 100 times.
Navigate to the Controls page of the System Menu.
Unplug a Gamepad.
Close the System Menu
Plug in a Gamepad.
Open the System Menu.
Purchase and launch the Devolver Digital Bootleg Launcher.