Test multiple players at the same time and compare their results.
Do all 'story' tests back to back.
Do all 'birthday' tests back to back.
Do all 'questions & order' tests back to back.
Do all 'Graphical Tests' back to back.
Finish all 'THE SEX' tests.
Finish every serious test available.
Finish all 'THE OTHERS' tests.
Finish all 'THE ACTIONS' tests.
Finish all 'THE OUTSIDE' tests.
Finish all 'THE INSIDE' tests.
Finish one of the 32 serious tests.