Here is the full list of all 19 Doki Doki Literature Club Plus! achievements. It takes around 6-8 hours to unlock all of the achievements on Windows.
Achieve 100% data collection.
Review Paula's project plan.
Spend 20 minutes listening to music on the desktop.
Find Dan's special note.
Draw boxes on the desktop.
Listen to a lot of what Monika has to say.
Delete Monika twice while getting deleted zero times.
Write a poem in 20 seconds or less.
Finish all of the Side Stories.
Choose not to quit DDLC.
Love, Monika
Ruin the game.
Your desktop wallpaper could not be changed due to an administrative policy restriction on this computer. For more information, contact your system administrator.
Write a perfect poem for Monika.
Start a New Game.
Write a perfect poem for Sayori.
Write a perfect poem for Natsuki.
Write a perfect poem for Yuri.
Spend enough time during the poem minigame for the music to loop.