14 Oct 2020 14 Oct 2020
I have experimented a few times to get this achievement on different accounts. This achievement can be unlocked with either of the twin-related bond achievements. There are three dialogue options that affect this achievement.
1. You must not tell Michael about the memories.
2. Don't reveal to Chief Brown that Alyson killed Mary-Anne.
3. Stick with the Twins memory about how Mary-Anne wanted to kill Tyler.
If you do the first two but pick Tom's memory of Mary-Anne's death, you will get the epilogue that involves Tyler.
Hope this helps.