BE = Bad Ending, each of which gives an achievement.

I was able to get Good Ending with all girls + alone through maximizing all choices, and picking for Qing'er when I had a choice. I also went back to modern times in every choice.

Make sure you do EVERY modern times path, or you can lock yourself out of a future modern times path.

There is are 2 bad endings related to Gong near the end of Chapter 6, one with high relationship and one with low relationship. So if you can do Agree, then you need to go back and raise relationship... and if you can do On Conditions, then you need to go back and lower relationship.

Where am I? 0, What's Wrong With Me 0, We Are +5 Qing'er

Need Company +15 Qing'er, Don't Need Company -5 Qing'er, Sleep Together -15 Qing'er

I've Met Him, I Haven't Met Him - No impact

Change Subject +5 Qing'er, Without Blame +10 Qing'er, Sigh Hard Luck -10 Qing'er

Beathe - leads to minigame, Do Not Breathe

Honest +5 Lin, Don't Know 0, Lie -10 Lin

No Peeking 0, Steal Glance +10 Lin

Argue Strongly -5 Gong, Angry Reprimand -10 Gong, Kind & Pleasant 0

Don't Go, Go - No impact

Stop Xiaobai -10 Gong, Accuse Zhang +10 Gong

Xiaobai, Qing'er - No impact

Too Lazy, One's Tongue - No impact

Xiaobai, Qing'er, Gu - No impact

Feeling -5 Lin, Sleep +5 Lin, Health +10 Lin

Since You Like It +5 Lin, Reluctant Request -5 Lin

Will Not Be Back (Pick right-middle) 0, Modern Times:
MT - Wait +5 Lin, Phone 0, Look Around -5 Lin

Strong +10 Gu -5 Qing'er, Integrated 0, Mellow -5 Gu, +10 Qing'er

Spices, Chili Sauce - No impact

Xiaobai, Qing'er, Gu - +15 for pick, -5 for other two

Xiaobai +15 Gong -5 Qing/Gu, Qing'er +10 Qing -5 Gong/Gu, Gu +10 Gu -5 Gong/Qing

Don't Follow, Follow
DF - Hand Out -10 Gong, Encouragement +10 Gong, Hemostatic 0
F - Firecracker -10 Gu, Scare Box +15 Gu, Hit Him -10 Gu

Tea +10 Ming, Wine BE, Cola 0

Beautiful -10 Ming, Business +10 Ming, Steady Mind -5 Ming

Let Her Light, Back to Modern Times - No impact

Ball +10 Gong, Candle -10 Gong, String -5 Gong, Foot -10 Gong

Temporary Band 0, Modern Times
MT - Step Forward +10 Ming, Money -10 Ming, Silent -5 Ming

Friend?, Sure to Stay - No impact

Gu +10 Gu -5 Ming, Ming +10 Ming, -5 Gu, Uncle Da -5 Gu/Ming

Take Look -15 Lin, Pretend Blind BE, Turn Around +15 Lin

Resist +15 Lin, Give Up -15 Lin

Mung Bean Cake 0, Modern Times
MT - Pretend Not to See BE, Take Advantage BE, Patience 0

Teach Lesson, Dedicate Love, Trick Sugar - No impact

Fake Formula 0, Break Cup BE

Rational Persuasion -10 Gu, Retreat to Advance +10 Gu

Look for Gu 0, Modern Times
MT - Blindfold +5 Gong, Eyes Open -5 Gong, Stop Her +10 Gong
Teach +10 Gong, Tease +5 Gong, Encourage 0

Argue Strongly BE, Ask for Help 0, Big Horn 0

Report Police BE, Climb Over Wall BE, Camoflague Killer 0

Doby +5 Gu, Whisper +10 Gu

Distinguish 0, Bare the Truth BE, Threaten BE

Who Says the Stars, Not the Moon, Anti-Fraud Books - No impact

Look for Lin 0, Modern Times
MT - Hold Out Hand +10 Ming, Extend Feet +5 Ming, Yell 0

Dashu BE, Gu 0

Scare Her +10 Qing'er, Straight Over -10 Qing'er

Eat by Self 0, Let Sunny Feed +10 Qing'er

Reprimand -10 Gong, Go Together +10 Gong

Left +10 Gong -5 Gu, Middle -5 Gong -5 Gu, Right +10 Gu -5 Gong

Xiaobai, Qing'er, Mingyue - +10 for pick, -5 for others

Better if Light On, Lamp Ugly - No impact

Just Kidding +10 Lin, So Bitter -5 Lin

Recent Breakthrough -10 Ling, Something Wrong +10 Lin

Restaurant 0, Modern Times
MT - Dr Assistant, Boss, Foreign Personnel - No impact

Marketing 0, Modern Times
MT - Substitution BE, Patience 0

Criticism 0, Modern Times
MT - Straight Ball +10 Gong, Doby Her +5 Gong, Persuade -5 Gong

Apologize 0, Modern Times
MT - Fail QTE = BE, Win QTE 0

Ming, Xiaobai - +10 for pick, -10 for other

Retreat 0, Don't Retreat BE

Seductive Women 0, Persuade +10 Gong, Self-Sacrifice 0

Look for Yan 0, Modern Times
MT - Step Forward 0, Report Police 0, Pretend Timid BE

Birthday Noodles 0, Modern Times
MT - Pick and Run, Buy Flowers, Explain - No impact

Qing'er, Gu, Ming, Xiaobai, Lin Hands - No impact

Lin, Qing'er, Xiaobai, Ming, Gu Truth or Dare - No impact

Kitchen (Left and Left-Middle) 0, Modern Times
MT - Escape, Storm, Floating Clouds - No impact
Buy Flowers, Sweethearts, Street Nameplate - No impact

Windproof Lighter 0, Sell Restaurant BE, Give Up Game 0

Go +10 Gu, Don't Go -5 Gu

Question 0, Good Wishes BE

Do It Self +5 Gu, Gu Cook -5 Gu, Hotpot +10 Gu

Practice 0, Modern Times
MT - Hands Off BE, Calm Face 0, Give Tit BE
Prattle, Upright Gentleman, Travel Through Time - No impact

Electric Batons, Lose Weapons - Can go 2 ways... depending on getting the time travel speaker, I believe? But does not matter for achievements.

Xiaobai, Gu, Ming - -10 for the one picked

Believe You +10 Qing'er, Still a Chance
MT - Receive, Soft Rice, Decline - No impact

Joke +10 Gong, Recall -10 Gong, Sunglasses 0

Lin, Xiaobai, Qing'er, Ming, Gu Pillow Fight - No impact

Cry For Help BE, Sit At Table 0

Sovereign, Hotel Boss, Cuddle - No impact

Agree BE, On Conditions BE, Disagree 0 - Left choice low relationship w/ Gong, Middle choice high relationship w/ Gong

Life and Death BE, Struggle Hard 0

5 Girls + Uncle Du - No impact

5 Girls - Say goodbye to 1, you can then get 5 good endings (4 girls + Alone); then go back and change your goodbye to another for that final good ending.

After you have all endings, go back to main menu, Archives, Achievements, and the final achievement will award.