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