Start a new game for the first time

Finish all routes

Use the glossary

Play the game with all glossary entries having been read

Play the game with popup messages turned off

Use the quick jump feature 10 times

Hide the text box once while playing the game

Try out all available window resolutions

Listen until the end of Yukishiro George's first speech

Listen until the end of Yukishiro George's second speech

Listen to one full loop of theme song on the title screen

Play the game for over 24 hours

Start a new game after clearing a route

Finish May's route

Finish Suguri's route

Finish Natsume's route

Finish Koharu's route

Unlock additional choices

Play the game after changing both auto-mode speed and minimum wait time

Play the game with all save slots used

Quick-save more than 10 times

Clear the minigame

Unlock all achievements