| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.44/5 | 4.75/5 |
| Vol 2 | 2.25/5 | 4.71/5 |
| Vol 3 | 2.15/5 | 4.60/5 |
| Vol 4 | 2.30/5 | 4.66/5 |
| Vol 5 | 2.20/5 | 4.62/5 |
| Vol 6 | 2.35/5 | 4.77/5 |
| Vol 7 | 2.09/5 | 4.58/5 |
| Vol 8 | 2.11/5 | 4.51/5 |
| Vol 9 | 2.09/5 | 4.56/5 |
| Vol 10 | 2.04/5 | 4.58/5 |
| Vol 11 | 1.90/5 | 4.45/5 |
| Vol 12 | 2.04/5 | 3.72/5 |
| Vol 13 | 1.88/5 | 4.42/5 |
| Vol 14 | 1.98/5 | 4.25/5 |
| Vol 15 | 1.82/5 | 2.96/5 |
| Vol 16 | 2.07/5 | 4.64/5 |
| Vol 17 | 1.93/5 | 3.89/5 |
| Vol 18 | 2.01/5 | 4.39/5 |
| Vol 19 | 2.16/5 | 4.69/5 |
| Vol 20 | 1.98/5 | 4.64/5 |
| Overall | 2.11/5 | 4.77/5 |