Beat the game as Saturn/Luna-Terra/Pluto
☆ You can get any ending for the character, regardless if you stay loyal to or betray each of their faction.

Beat the game as all three characters
☆ The endings you get do not matter, as long as you beat the game with each of the three.

Beat the game with the CM/MF/CG ending
☆ Your answers need to be mostly loyal to the faction each achievement requires you to beat the game as.
☆ You can check on the Alignment tab before you start missions if you're unsure where you're at or if you chose an option other than “loyal” when playing.

Get all three endings
☆ Get the CM, MF, and CG endings. It doesn't matter which character gets the ending, as long as you get all three.

Make a choice for the first time
☆ Can't really miss this one.

See all chats
☆ Read every message under the Comms tab during each character's playthrough every single time it is available.
☆ It's not necessary to read the Mail and Alerts for this achievement.
☆ It doesn't matter which ending you're going for, you just need to read the messages in the Comms tab once per each character's entire playthrough. That's every single day.

Get An Easter Egg
☆ Align each faction equally.
☆ With every choice, it should be CM- 50%, MF- 50%, CG- 50%.
☆ One easy way to accomplish this is to choose "betray" on every mission from dayd 1-4. Once you're on day 5, be loyal in the rest of your choices and it'll unlock for you.

Play As Luna-Terra and get an ending other than MF
☆ Most of your choices should betray the MF to get this one.
☆ You can check on the Alignment tab before you start missions if you're unsure if you're on the right track.
☆ You CAN get the Easter Egg ending and this achievement together, but you obviously can't pick the MF ending when it gives you the three options.

☆ Start with Saturn.
☆ Be loyal with every choice that you make.
☆ Check the Comms tab whenever you're given the chance.

Unlocked:

• Good at Bad Decisions
  
• Necklace of Storms
  
• The New Planets

☆ Select Pluto.
☆ Go for the MF ending. (Choose to betray the CG and favor the MF. If you need to, keep track of the percentages under the Alignment tab.)
☆ Check the Comms tab whenever you're given the chance.

Unlocked:

• Eye of the Underworld
  
• Moving the Decimal Place

☆ Select Luna-Terra.
☆ Get the Easter Egg ending. (You need to balance the three factions' percentages so that they're even at the end of the game. I choose "betray" options from days 1-4. Starting on day 5, I stayed loyal to the MF for the rest of the game.)
☆ Choose the CG ending.

Unlocked:

• Subtext Is For Cowards
  
• The Ending We Choose Is...
  
• Sea of Crises
  
• Childhood Again
  
• …Our True Ending
  
• That Which Is Strong Will Not Triumph
  
• I've Never Betrayed Anyone In My Entire Life