Here is the full list of all 50 Hentai IQ Puzzle achievements. It takes around 0-1 hour to unlock all of the achievements.
D
Q
R
S
T
U
V
W
X
Y
Z
〇
1
2
3
4
5
6
7
8
9
10
❤
❤ ❤ ❤
□
■
cube
CUBEE
◇
◈
►
◄
▲
▼
C
O
P
M
N
I
J
K
L
G
H
E
F
777
A
B