| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.43/5 | 3.90/5 |
| Vol 2 | 3.41/5 | 3.76/5 |
| Vol 3 | 3.48/5 | 3.95/5 |
| Vol 4 | 3.56/5 | 4.27/5 |
| Vol 5 | 3.50/5 | 4.16/5 |
| Vol 6 | 3.46/5 | 4.18/5 |
| Vol 7 | 3.49/5 | 4.22/5 |
| Vol 8 | 3.36/5 | 3.84/5 |
| Vol 9 | 3.52/5 | 4.26/5 |
| Vol 10 | 3.31/5 | 3.83/5 |
| Vol 11 | 3.44/5 | 3.97/5 |
| Vol 12 | 3.40/5 | 3.97/5 |
| Vol 13 | 3.48/5 | 4.16/5 |
| Vol 14 | 3.42/5 | 3.94/5 |
| Vol 15 | 3.38/5 | 3.76/5 |
| Vol 16 | 3.41/5 | 3.89/5 |
| Overall | 3.44/5 | 4.27/5 |