Had trouble getting the achievement after playing the game the way the description implies. To be sure to get it, you need some time.
1. Play the game with e.g. only making purple decisions
2. Don't exit while playing til the end
3. After the end credits, DON'T EXIT THE GAME! DON'T MAKE A NEW IN-GAME PROFILE! IMMEDIATELY START A NEW GAME!
4. Play the game again til the end, only making orange decisions.
5. The achievement will pop up after
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