Here is the full list of all 90 MY Neko Waifu! achievements.
Girl 1 select
Girl 1 level
Girl 1 gallery
Girl 2 select
Girl 2 level
Girl 2 gallery
Girl 3 select
Girl 3 level
Girl 3 gallery
Girl 4 select
Girl 4 level
Girl 4 gallery
Girl 5 select
Girl 5 level
Girl 5 gallery
Girl 6 select
Girl 6 level
Girl 6 gallery
Girl 7 select
Girl 7 level
Girl 7 gallery
Girl 8 select
Girl 8 level
Girl 8 gallery
Girl 9 select
Girl 9 level
Girl 9 gallery
Girl 10 select
Girl 10 level
Girl 10 gallery
Girl 11 select
Girl 11 level
Girl 11 gallery
Girl 12 select
Girl 12 level
Girl 12 gallery
Girl 13 select
Girl 13 level
Girl 13 gallery
Girl 14 select
Girl 14 level
Girl 14 gallery
Girl 15 select
Girl 15 level
Girl 15 gallery
Girl 16 select
Girl 16 level
Girl 16 gallery
Girl 17 select
Girl 17 level
Girl 17 gallery
Girl 18 select
Girl 18 level
Girl 18 gallery
Girl 19 select
Girl 19 level
Girl 19 gallery
Girl 20 select
Girl 20 level
Girl 20 gallery
Girl 21 select
Girl 21 level
Girl 21 gallery
Girl 22 select
Girl 22 level
Girl 22 gallery
Girl 23 select
Girl 23 level
Girl 23 gallery
Girl 24 select
Girl 24 level
Girl 24 gallery
Girl 25 select
Girl 25 level
Girl 25 gallery
Girl 26 select
Girl 26 level
Girl 26 gallery
Girl 27 select
Girl 27 level
Girl 27 gallery
Girl 28 select
Girl 28 level
Girl 28 gallery
Girl 29 select
Girl 29 level
Girl 29 gallery
Girl 30 select
Girl 30 level
Girl 30 gallery