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