| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.51/5 | 3.98/5 |
| Vol 2 | 3.49/5 | 3.84/5 |
| Vol 3 | 3.56/5 | 4.03/5 |
| Vol 4 | 3.64/5 | 4.35/5 |
| Vol 5 | 3.58/5 | 4.24/5 |
| Vol 6 | 3.54/5 | 4.26/5 |
| Vol 7 | 3.57/5 | 4.30/5 |
| Vol 8 | 3.44/5 | 3.92/5 |
| Vol 9 | 3.60/5 | 4.34/5 |
| Vol 10 | 3.39/5 | 3.91/5 |
| Vol 11 | 3.52/5 | 4.05/5 |
| Vol 12 | 3.48/5 | 4.05/5 |
| Vol 13 | 3.56/5 | 4.24/5 |
| Vol 14 | 3.50/5 | 4.02/5 |
| Vol 15 | 3.46/5 | 3.84/5 |
| Vol 16 | 3.49/5 | 3.97/5 |
| Overall | 3.52/5 | 4.35/5 |