| Progress | Difficulty | Peak |
|---|---|---|
| Vol 1 | 3.28/5 | 4.27/5 |
| Vol 2 | 3.26/5 | 4.10/5 |
| Vol 3 | 3.45/5 | 4.29/5 |
| Vol 4 | 3.49/5 | 4.26/5 |
| Vol 5 | 3.52/5 | 4.33/5 |
| Vol 6 | 3.30/5 | 4.07/5 |
| Vol 7 | 3.53/5 | 4.34/5 |
| Vol 8 | 3.51/5 | 4.31/5 |
| Vol 9 | 3.37/5 | 4.15/5 |
| Vol 10 | 3.44/5 | 4.28/5 |
| Vol 11 | 3.35/5 | 4.17/5 |
| Vol 12 | 3.51/5 | 4.33/5 |
| Vol 13 | 3.50/5 | 4.35/5 |
| Vol 14 | 3.58/5 | 4.40/5 |
| Vol 15 | 3.46/5 | 4.24/5 |
| Vol 16 | 3.61/5 | 4.43/5 |
| Vol 17 | 3.41/5 | 4.29/5 |
| Vol 18 | 3.45/5 | 4.26/5 |
| Vol 19 | 3.55/5 | 4.37/5 |
| Vol 20 | 3.57/5 | 4.37/5 |
| Vol 21 | 3.50/5 | 4.39/5 |
| Vol 22 | 3.58/5 | 4.37/5 |
| Overall | 3.47/5 | 4.43/5 |