| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.29/5 | 3.96/5 |
| Vol 2 | 3.37/5 | 4.23/5 |
| Vol 3 | 3.45/5 | 4.28/5 |
| Vol 4 | 3.35/5 | 4.12/5 |
| Vol 5 | 3.64/5 | 4.48/5 |
| Vol 6 | 3.46/5 | 4.30/5 |
| Vol 7 | 3.40/5 | 4.28/5 |
| Vol 8 | 3.73/5 | 4.52/5 |
| Vol 9 | 3.60/5 | 4.41/5 |
| Vol 10 | 3.76/5 | 4.50/5 |
| Vol 11 | 3.91/5 | 4.57/5 |
| Vol 12 | 3.94/5 | 4.58/5 |
| Vol 13 | 3.76/5 | 4.51/5 |
| Vol 14 | 4.02/5 | 4.61/5 |
| Vol 15 | 3.97/5 | 4.59/5 |
| Vol 16 | 4.09/5 | 4.64/5 |
| Overall | 3.67/5 | 4.64/5 |