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