Feel free to consult this guide as well if you prefer a video walkthrough:
https://www.youtube.com/watch?v=lbW2RTGKqzo

A → ↑ →
B ↓ ← ↓ →
C → ↑ ← ↓ → ↑
D ← ↑ → ↑ → ↓ ←
E ↓ ← ↓ → ↓ → ↑ → ↓ → ↑
F → ↓ ← ↓ ←
G → ↑ ← ↓ → ↑ → ↑ → ↓ ←
H → ↑ ← ↑ → ↑ ← ↓ → ↓ ← ↓ ← ↑ → ↓ → ↓ → ↑ ←
I ↑ → ↓ ← ↓ → ↑ ← ↑ → ↑ ←
J → ↓ ← ↓ → ↑ ← ↓ →
K → ↓ →
L → ↓ → ↑ ←
M ↓ → ↓ → ↑ → ↑ →
N → ↓ ← ↑ → ↑ ← → ↓
O ← ↓ ← ↓ ← ↑ ← ↓
P → ↓ ← ↓ →
Q → ↓ → ↑ → ← ↑ → ↓ → ↓ ← ↓
R ← ↑ ← ↓ ← ↓ → ↓ ← ↓ ↑ → ↑ ← ↑
S → ↑ → ↑ → ↓ ← ↓ → ↓ →
T ↓ ← ↓ ← ↓ → ↑
U → →
V → ↓ → → ↓ ← ↑ ← →
W → ↑ → ↑ → ↑
X → ↑ ← ↓ → ↑ → ↓ ← ↓ ←
Y ↓ ← ↑ ←
Z ↑ → ↓ → ↑ ← ↑ →

0 ↑ → ↓ →
1 ↓ ← ↓ → ↑ → ↑ ← ↑ ← ↓ ← → ↓ → ↓ ←
2 ↓ → ↑ → ↓ ↑ ↑ → ↑ → ↓
3 ← ↓ → ↓ ↓ ← ↑ ← ↓ → ↑ ←
4 ← →
5 → ↓ → ↑ ← ↓ →
6 ↑ ← ↑ ← ↓ ← ↑ ←
7 → ↓ → ↑→ ↓ ← ↑ ← ↑ ← → ↓ → ↓ → ↑
8 ← ↑ ← ↑ ← ↓ → ↓ → ↑ → ↓ → ↑
9 ↓ ← ↑ ← ↓ ← ↓ ← ↓ ←

+ ↑ → ↓ ← ↑ → ↓ → ↓ ← ↓ ↑ → ↑ → ↑ → ↓ → ↓ → ↓ ← ↑ →
- → ↓ → ↑ → ↓ → ↓ ← ↑ → ↓ → ↑
= ↓ ← ↓ → ↓ ← ↓ ← ↑ ← ↓ → ↓ → ↑ → ↓ ← ↑ →
! → ↓ → ↑ → ↓ → ↑ ← ↑ ← ↓ → ↓ → ↓ → ↓ ← ↑ → ↑
? → ↓ → ↑
# → ↓ → ← → ↑ ←
$ ← ↑ ← ↓ → ↓ ← ↑ ← ↓ ↑ ←
* ↓ ← ↓ ↑ ← ↑ ← ↓ ← ↑ ↑ ← ↓ ↓ →
Б ↓ → ↓ ← ↑ ← ↓ → ↑ ← ↓ ← ↑ ← ↓ → ↓ ← → ↑ → ↓ ← ↓
Г ↓ → ↓ → ↓ ← ↑ ← ↑ → → ← ↓ → ↓ → → ↑ ← ↑ → ↓
Д ↓ → ↓ ← ← ↑ ←
Ж → ↑ → ↑ ← ↓ → ↑ → ↓ →
И ↓ → ↑ → ↓ → ↓ ← ↑ → ↓ → ↓ ← ↓ ← ↑ → ↓ →
Л ↓ ← ↓ ← ↑ ← ↓ ← ↓ ↓ ←
П → ↓ → ↑ → → ↑ ↑ → ↓
Ф → ↓ ↑ → → ↓
Ц ↓ → ↑ ← ↑ → ↓ →
Ч ↑ → ↓ ← ↓ → ↓ ← ↑ ← ← ↑ ← ↑ → ← ↓ →
Ш → ↑ ← ↓ → ↓ → → ↑ → ↓ → ← ↑ ← ↓ → → ↓ → ↓ → ↓ ← ↓
Ы ↓ ← ↓ → ↓ → → ↓ ← ↑ ← ↓ ← → ↑ ← ↑ → ↑ ← ↓ ← ↑ ↓ ← ↓ → ↓ ←
Ь ↑ ← ↑ ← → ↑ ← ↓ → ↑
Э → ↓ → ↑ → ↑ ←
Ю → ↓ → ↓ → ↑ ← ↑ ← ↑ → ↓ ← ↑
Я → ↓ → ↓ → ↑ ↑ ← ↑ →

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Completion!
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