Finish all Active Searches.
Finish all endings, choices and Active Searches on the aqua line.
Finish all endings, choices and Active Searches on the blue line.
Check the map during any Active Search.
Finish all endings, choices and Active Searches on the cyan line.
Get all endings.
Get the True End with the fewest endings possible.
Get the True End.
Get all achievements.
Unlock all CG art pieces.
Unlock all Lexicon entries.
Finish all endings, choices and Active Searches on the green line.
Finish all endings, choices and Active Searches on the lime line.
Finish all endings, choices and Active Searches on the orange line.
Finish all endings, choices and Active Searches on the pink line.
Finish all endings, choices and Active Searches on the purple line.
Read all Lexicon entries. Yes, go back and read them. They're fun.
Finish all endings, choices and Active Searches on the red line.
Unlock all four locks.
Unlock your first lock.
Finish all endings, choices and Active Searches on the yellow line.