| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.65/5 | 4.32/5 |
| Vol 2 | 2.81/5 | 4.35/5 |
| Vol 3 | 2.90/5 | 4.47/5 |
| Vol 4 | 2.66/5 | 4.40/5 |
| Vol 5 | 2.63/5 | 4.30/5 |
| Vol 6 | 2.53/5 | 4.23/5 |
| Vol 7 | 2.74/5 | 4.42/5 |
| Vol 8 | 2.93/5 | 4.55/5 |
| Vol 9 | 2.73/5 | 4.36/5 |
| Vol 10 | 2.51/5 | 3.67/5 |
| Vol 11 | 2.63/5 | 4.17/5 |
| Vol 12 | 2.69/5 | 4.30/5 |
| Vol 13 | 3.27/5 | 4.53/5 |
| Vol 14 | 2.58/5 | 4.30/5 |
| Vol 15 | 2.52/5 | 4.17/5 |
| Vol 16 | 2.75/5 | 4.42/5 |
| Vol 17 | 2.74/5 | 4.43/5 |
| Vol 18 | 2.90/5 | 4.50/5 |
| Vol 19 | 2.90/5 | 4.48/5 |
| Vol 20 | 2.73/5 | 4.27/5 |
| Vol 21 | 2.76/5 | 4.40/5 |
| Overall | 2.74/5 | 4.55/5 |