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