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