| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.95/5 | 4.73/5 |
| Vol 2 | 2.28/5 | 4.61/5 |
| Vol 3 | 2.12/5 | 4.50/5 |
| Vol 4 | 2.06/5 | 4.60/5 |
| Vol 5 | 2.70/5 | 4.72/5 |
| Vol 6 | 2.46/5 | 4.68/5 |
| Vol 7 | 4.24/5 | 4.80/5 |
| Vol 8 | 2.04/5 | 4.56/5 |
| Vol 9 | 2.37/5 | 4.64/5 |
| Vol 10 | 4.21/5 | 4.79/5 |
| Vol 11 | 2.76/5 | 4.70/5 |
| Vol 12 | 2.10/5 | 4.64/5 |
| Vol 13 | 2.70/5 | 4.71/5 |
| Vol 14 | 2.71/5 | 4.70/5 |
| Vol 15 | 3.68/5 | 4.76/5 |
| Overall | 2.76/5 | 4.80/5 |