Here is the full list of all 150 Chocolate makes you happy 6 achievements.
Level 38
Level 39
Level 40
Level 41
Level 42
Level 43
Level 44
Level 45
Level 46
Level 47
Level 48
Level 49
Level 50
R2
R3
S1
S2
S3
T1
T2
T3
U1
U2
U3
V1
V2
V3
W1
W2
W3
X1
X2
X3
Y1
Y2
Y3
Z1
Z2
Z3
Level 37
Q3
R1
Level 36
Q1
Q2
Level 35
P2
P3
Level 34
O3
P1
O1
O2
Level 33
N2
N3
Level 32
M3
N1
Level 31
Level 30
M1
M2
L2
L3
Level 29
K3
L1
Level 28
Level 24
Level 27
I1
I2
K1
K2
J2
J3
Level 26
Level 25
I3
J1
Level 23
H2
H3
Level 22
G3
H1
Level 21
G1
G2
Level 20
F2
F3
E3
F1
Level 19
Level 18
E1
E2
Level 17
D2
D3
C3
D1
Level 16
Level 15
C1
C2
Level 14
B2
B3
Level 13
A3
B1
Level 12
A1
A2
0c
Cookie
Level 11
Level 10
0a
0b
Level 9
9a
9b
Level 8
8a
8b
Level 7
7a
7b
6a
6b
Level 6
Level 5
5a
5b
4a
4b
Level 4
3a
3b
Level 3
2a
2b
Level 2
Level 1
1a
1b