| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.58/5 | 4.50/5 |
| Vol 2 | 2.52/5 | 4.34/5 |
| Vol 3 | 2.49/5 | 3.82/5 |
| Vol 4 | 2.45/5 | 3.84/5 |
| Vol 5 | 2.41/5 | 3.99/5 |
| Vol 6 | 2.60/5 | 4.34/5 |
| Vol 7 | 2.57/5 | 3.99/5 |
| Vol 8 | 2.68/5 | 4.52/5 |
| Vol 9 | 2.47/5 | 4.34/5 |
| Vol 10 | 2.33/5 | 3.62/5 |
| Vol 11 | 2.18/5 | 3.20/5 |
| Vol 12 | 2.39/5 | 4.29/5 |
| Vol 13 | 2.28/5 | 3.14/5 |
| Vol 14 | 2.14/5 | 3.18/5 |
| Vol 15 | 2.35/5 | 3.62/5 |
| Overall | 2.44/5 | 4.52/5 |