Hunting down this last achievement

[tomtheomnom.TV]

I did 3 playtroughs of this game with my girlfriend and we can not get the last achievement (The past that will not change).
I tried looking it up, but i can only find a steam form looking for the same achievement.
Does anyone know how to get this or is it currently bugged?

[Tidale]

I just played this through twice in a row with same person (same person hosting both times) and we both unlocked he last achievement without a hitch.

[tomtheomnom.TV]

Publicado originalmente por Tidale:

I just played this through twice in a row with same person (same person hosting both times) and we both unlocked he last achievement without a hitch.

Do you mean as in play 2 times as both characters or just 1 time as the robot side and 1 run as the animal side ?

[Mei Mei]

Did you make different choices each time? Like pick the dad in one, the mom in other, save the old man in one, let the old man die in the other? The only one that DOESN'T change is the final choice. So like if you have the boy in blue stay behind, it needs to be him both endings. I got the achievement no probs. 1 playthrough as robot and 1 as animal + the third should net you all achievements.