| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.69/5 | 4.20/5 |
| Vol 2 | 2.77/5 | 4.37/5 |
| Vol 3 | 2.78/5 | 4.28/5 |
| Vol 4 | 2.74/5 | 3.98/5 |
| Vol 5 | 2.71/5 | 4.31/5 |
| Vol 6 | 2.60/5 | 3.86/5 |
| Vol 7 | 2.67/5 | 4.14/5 |
| Vol 8 | 2.76/5 | 3.92/5 |
| Vol 9 | 2.51/5 | 3.38/5 |
| Vol 10 | 2.28/5 | 3.26/5 |
| Vol 11 | 2.98/5 | 4.58/5 |
| Vol 12 | 2.77/5 | 4.45/5 |
| Vol 13 | 2.73/5 | 4.47/5 |
| Vol 14 | 2.75/5 | 4.49/5 |
| Vol 15 | 2.63/5 | 4.45/5 |
| Vol 16 | 2.98/5 | 4.55/5 |
| Vol 17 | 2.84/5 | 4.53/5 |
| Vol 18 | 2.86/5 | 4.40/5 |
| Vol 19 | 2.77/5 | 3.78/5 |
| Overall | 2.73/5 | 4.58/5 |