Our Personal Space Gallery Unlock Guide
First, a word about the mechanics of this game:
Your ending depends on two stats - your relationship with your husband ("loved"), and your contributions to the community "community_level". Small things will be different depending on your job, the skills you picked, and whether you chose to have a baby or not.
"loved" increases by spending time with your husband during free time, and also by choosing honest, kind options during other sequences. You can tell how high this stat is by looking at the big red heart on the computer pad.
"community_level" increases by going to work, maxing out skills, and doing other things to benefit the community (helping other colonists, sharing, working hard). There's not really a way to view this stat directly.
There's one more stat, "relaxed", that doesn't directly affect the ending, but will affect some of the choices you see. How relaxed/stressed she is is indicated by the main character's expression on the computer pad screen. If she's worried and stressed out, she won't have as many loving and patient options. She becomes stressed by going to work, as well as during stressful events. You can become more relaxed by taking time of work or spending time alone (as well as a few other things, like soaking in hot springs/bath... just like Harvest Moon
From the main menu under "Extras", you can choose Gallery to see what you've unlocked so far. Below I'll tell how to unlock each of these, plus some rare scenes that aren't in the Gallery but are interesting!
Arriving on Talaam
You can't miss this one. Just get to the new planet.
Return to Earth
This is the ending where they get divorced. If you've had an affair with Brennan, the two of you will be together. If you've had a baby, you bring the baby with you.
Making it Work
You can get this ending by being mean to your husband and lazy in the community. (loved <= 0, community_level < 40) If both of these are low enough and you did not just have a baby, in Month 23 you can tell your husband that you want to leave, and in Month 24 Brennan will invite you to come with him. It's harder to get this option if you choose to have a baby, but possible. You just have to never go to work, don't max any skills unless you have to, and always be mean to the community and your husband.
Having an affair with Brennan is not required for this ending, but it is a pretty difficult option to get. First, your relationship with your husband needs to be very low, and you need to talk with Brennan in Month 9 and have lunch with him in Month 18. Then, in Month 21, you need to investigate Brennan's battery problem and end up with him telling you everything in his room. When he asks what you will do, say "I won't tell if..." and then choose "kiss me".
This changes events in month 23. Depending on how good/bad your relationship is with your husband, you can either call it a mistake and try to get your husband to forgive you, or you can forget about him and just enjoy some time with Brennan.
This is the "good" ending. You will get this if your loved and community_level are high enough not to get the bad ending, but not really high ((loved < 35) or (community_level < 60)). You can get this ending by sometimes being mean, trying out lots of different skills, but also sometimes spending time with your husband.
Just the Two of Us
This is the CG you get during the good or best ending if you do not have a baby yet. To not have a baby, at the very beginning on the shuttle when he asks if you want to have kids, choose "That's really crazy" and "She would probably fall off". Or "I don't know" and "Maybe in a few years/Maybe never". You still get this CG if you get pregnant during month 23.
The "best" ending requires you to have both high love, and high community_level (loved >= 35 and community_level >= 60). In order to do this, you should make sure the MC never gets too stressed out. If she appears worried or sad on the monthly computer screen, you can spend time alone. You can also miss work up to 3 times without penalty, which increases relax a lot.
The Face of the Future
In order to increase your community_level the most, it helps to max as many skills as possible. This is easiest on New Game+, but is possible the first time through. The Domestic skill tree probably has the most chances to increase community_level through ordinary skill events.
You can get this ending with or without a baby.
This is the CG you get during the good or best ending if you have a baby in month 24.
If you have unlocked all three endings, you will unlock the "Omake" under "Extras". Just a little Brennan side story.
Did you figure out how to make plastic from bacteria?
Try the Knowledge skill!
Did you win a contest at the party in month 20?
First, choose "Contests" as the entertainment of the party.
Then, if your physical is high, enter the wood-chopping contest. If your creative or technical is high, try space ship construction. If your knowledge or spiritual is high, try the Trivia contest. If your domestic is high, try Adamantium Chef.
Did you become a deputy mayor?
Try the Social skill!
Did you discover who the shampoo thief was in month 22?
You can use a high spiritual/social skill to talk to everyone, a high technical skill to catch the thieves on camera, or look for clues with a high knowledge skill.
Did you discover geysers and a natural hot spring?
Try the Physical skill!
I think that's everything! Let me know if there's any other mechanics or endings questions!