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.
Finish all of the Side Stories.
Find Dan's special note.
Review Paula's project plan.
Delete Monika twice while getting deleted zero times.
Write a poem in 20 seconds or less.
Write a perfect poem for Sayori.
Love, Monika
Ruin the game.
Listen to a lot of what Monika has to say.
Write a perfect poem for Monika.
Write a perfect poem for Natsuki.
Start a New Game.
Spend 20 minutes listening to music on the desktop.
Draw boxes on the desktop.
Your desktop wallpaper could not be changed due to an administrative policy restriction on this computer. For more information, contact your system administrator.
Choose not to quit DDLC.
Write a perfect poem for Yuri.
Spend enough time during the poem minigame for the music to loop.