| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.08/5 | 4.53/5 |
| Vol 2 | 2.79/5 | 4.30/5 |
| Vol 3 | 2.92/5 | 4.38/5 |
| Vol 4 | 2.89/5 | 4.48/5 |
| Vol 5 | 2.80/5 | 4.16/5 |
| Vol 6 | 2.86/5 | 4.36/5 |
| Vol 7 | 2.84/5 | 4.22/5 |
| Vol 8 | 2.90/5 | 4.42/5 |
| Vol 9 | 2.86/5 | 4.30/5 |
| Vol 10 | 3.05/5 | 4.53/5 |
| Vol 11 | 2.97/5 | 4.49/5 |
| Vol 12 | 2.90/5 | 4.48/5 |
| Vol 13 | 3.06/5 | 4.58/5 |
| Vol 14 | 2.80/5 | 4.22/5 |
| Vol 15 | 3.00/5 | 4.51/5 |
| Vol 16 | 3.33/5 | 4.62/5 |
| Vol 17 | 2.82/5 | 4.38/5 |
| Vol 18 | 2.95/5 | 4.51/5 |
| Vol 19 | 3.04/5 | 4.36/5 |
| Vol 20 | 2.98/5 | 4.55/5 |
| Vol 21 | 2.35/5 | 3.43/5 |
| Vol 22 | 1.82/5 | 3.41/5 |
| Overall | 2.91/5 | 4.62/5 |