Here is the full list of all 154 Chocolate makes you happy achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Level 50
Y3
Y4
Level 49
Y1
Y2
Level 48
X3
X4
Level 47
X1
x2
Level 46
W3
W4
Level 45
W1
W2
V3
V4
Level 44
Level 43
V1
V2
U3
U4
Level 42
U1
U2
Level 41
T3
T4
Level 40
T1
T2
Level 39
S3
S4
Level 38
Level 37
S1
S2
Level 36
R3
R4
R1
R2
Level 35
Level 34
Q3
Q4
Level 33
Q1
Q2
Level 32
P3
P4
Level 31
P1
P2
O3
O4
Level 30
Level 29
O1
O2
N3
N4
Level 28
Level 27
N1
N2
Level 26
M3
M4
Level 25
M1
M2
Level 24
L3
L4
L1
L2
Level 23
Level 22
K3
K4
K1
K2
Level 21
Level 20
J3
J4
Level 19
J1
J2
Level 18
I3
I4
Level 17
I1
I2
Level 16
H3
H4
Level 15
H1
H2
G3
G4
Level 14
Level 13
G1
G2
Level 12
F3
F4
F1
F2
Level 11
Level 10
E3
E4
Level 9
E1
E2
D3
D4
Level 8
D1
D2
Level 7
Level 6
C3
C4
C1
C2
Level 5
B3
B4
Level 4
B1
B2
Level 3
Level 2
A3
A4
Level 1
A1
A2
Z4
Z3
Z1
Z2