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.
Kill 100 frogs across all games.
Take damage in Catsylvania
Play as the frog in PikuBiku Ball Stars
Try to enter a cheat code.
Open the System Menu 1000 times.
Open the System Menu 100 times.
Unplug a Gamepad.
Plug in a Gamepad.
Close the System Menu
Navigate to the Controls page of the System Menu.
Open the System Menu.
Purchase and launch the Devolver Digital Bootleg Launcher.