Here is the full list of all 47 WAIFU IMPACT achievements.
Unlock 6 Akane gallery pictures
Unlock 5 Akane gallery pictures
Unlock 4 Akane gallery pictures
Unlock 3 Akane gallery pictures
Unlock 6 Setsuna gallery pictures
Unlock 5 Setsuna gallery pictures
Unlock 4 Setsuna gallery pictures
Unlock 3 Setsuna gallery pictures
Unlock 2 Setsuna gallery pictures
Unlock 2 Akane gallery pictures
Unlock 6 Aiko gallery pictures
Unlock 5 Aiko gallery pictures
Unlock 4 Aiko gallery pictures
Unlock 1 Setsuna gallery picture
Unlock Setsuna
Unlock all characters
Unlock 1 Akane gallery picture
Find all stars
Unlock 3 Aiko gallery pictures
Unlock 2 Aiko gallery pictures
Unlock 1 Aiko gallery picture
Unlock 6 Yukina gallery pictures
Unlock 5 Yukina gallery pictures
Unlock 4 Yukina gallery pictures
Unlock 3 Yukina gallery pictures
Unlock 2 Yukina gallery pictures
Unlock 1 Yukina gallery picture
Unlock 6 Sanae gallery pictures
Unlock 5 Sanae gallery pictures
Unlock 4 Sanae gallery pictures
Unlock 3 Sanae gallery pictures
Unlock Akane
Find 20 stars
Unlock 2 Sanae gallery pictures
Unlock 1 Sanae gallery picture
Unlock Aiko
Unlock 6 Haruka gallery pictures
Unlock 5 Haruka gallery pictures
Unlock Yukina
Find 10 stars
Unlock 4 Haruka gallery pictures
Unlock Sanae
Find 5 stars
Unlock 3 Haruka gallery pictures
Unlock 2 Haruka gallery pictures
Unlock 1 Haruka gallery picture
Get your first star