| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 2.26/5 | 3.99/5 |
| Vol 2 | 2.60/5 | 4.45/5 |
| Vol 3 | 2.71/5 | 4.62/5 |
| Vol 4 | 2.43/5 | 4.38/5 |
| Vol 5 | 2.59/5 | 4.51/5 |
| Vol 6 | 2.66/5 | 4.61/5 |
| Vol 7 | 2.46/5 | 3.89/5 |
| Vol 8 | 2.83/5 | 4.18/5 |
| Vol 9 | 3.06/5 | 4.29/5 |
| Vol 10 | 2.95/5 | 4.32/5 |
| Vol 11 | 2.66/5 | 3.96/5 |
| Vol 12 | 2.94/5 | 4.35/5 |
| Vol 13 | 2.74/5 | 4.03/5 |
| Vol 14 | 2.83/5 | 4.09/5 |
| Vol 15 | 2.83/5 | 4.12/5 |
| Overall | 2.70/5 | 4.23/5 |