| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.24/5 | 4.09/5 |
| Vol 2 | 2.38/5 | 3.98/5 |
| Vol 3 | 2.55/5 | 3.75/5 |
| Vol 4 | 2.61/5 | 4.06/5 |
| Vol 5 | 2.74/5 | 3.91/5 |
| Vol 6 | 2.75/5 | 3.93/5 |
| Vol 7 | 2.90/5 | 4.01/5 |
| Vol 8 | 2.66/5 | 4.01/5 |
| Vol 9 | 3.00/5 | 4.09/5 |
| Vol 10 | 2.81/5 | 4.15/5 |
| Vol 11 | 2.95/5 | 4.36/5 |
| Vol 12 | 2.99/5 | 4.20/5 |
| Vol 13 | 2.85/5 | 4.00/5 |
| Vol 14 | 2.90/5 | 4.27/5 |
| Vol 15 | 3.04/5 | 4.06/5 |
| Vol 16 | 2.94/5 | 4.33/5 |
| Vol 17 | 3.30/5 | 4.49/5 |
| Vol 18 | 3.04/5 | 4.06/5 |
| Vol 19 | 3.02/5 | 4.38/5 |
| Vol 20 | 2.81/5 | 3.97/5 |
| Vol 21 | 2.95/5 | 4.29/5 |
| Overall | 2.86/5 | 4.49/5 |