| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.32/5 | 4.59/5 |
| Vol 2 | 2.26/5 | 4.47/5 |
| Vol 3 | 2.43/5 | 4.61/5 |
| Vol 4 | 2.63/5 | 4.64/5 |
| Vol 5 | 2.42/5 | 4.34/5 |
| Vol 6 | 2.03/5 | 4.23/5 |
| Vol 7 | 2.32/5 | 4.32/5 |
| Vol 8 | 3.04/5 | 4.72/5 |
| Vol 9 | 2.24/5 | 4.52/5 |
| Vol 10 | 2.35/5 | 4.58/5 |
| Vol 11 | 2.58/5 | 4.58/5 |
| Vol 12 | 2.84/5 | 4.69/5 |
| Vol 13 | 2.70/5 | 4.62/5 |
| Vol 14 | 2.18/5 | 4.02/5 |
| Vol 15 | 3.09/5 | 4.73/5 |
| Vol 16 | 2.41/5 | 4.56/5 |
| Vol 17 | 2.59/5 | 4.67/5 |
| Vol 18 | 2.75/5 | 4.62/5 |
| Overall | 2.51/5 | 4.73/5 |